JHEP08(2015)016 LSP b τ − 800 GeV, Springer LSP < July 15, 2015 m June 12, 2015 ˜ t August 5, 2015 : : : , m 1 mm). & LSP Accepted Received τ Published 10.1007/JHEP08(2015)016 and Tomer Volansky b doi: [email protected] , Published for SISSA by Oren Slone a [email protected] , Salvator Lombardo, a [email protected] 800 GeV) is excluded for a long-lived LSP ( , . 3 < ˜ H 1505.00784 m The Authors. Eric Kuflik, c Phenomenology a

We present the leading experimental constraints on supersymmetric models , [email protected] 1500 GeV, < ˜ g Ithaca, NY 14853, U.S.A. Raymond and Beverly SacklerTel-Aviv School 69978, of Israel Physics and Astronomy,E-mail: Tel-Aviv University, [email protected] Department of Physics, LEPP, Cornell University, b a Open Access Article funded by SCOAP m Keywords: ArXiv ePrint: and the ATLAS multitrack displacedand vertex vertex searches reconstruction have algorithms beenCMS applied. fully are recast, Heavy also with charged all applied.decays stable that cuts are In directly searches applicable. addition, by plane Our we for main results the consider are various representative exclusion scenarios. plots bounds We in find for the that prompt the LSP natural parameter space ( Abstract: with R-parity violation (RPV)both and the a well-motivated long-lived dynamical lightest RPVRPV scenario operators. (LSP). as We well Guided consider as byLSPs the naturalness, with conventional several we holomorphic possible study leading the decay cases channels of in stop, each , case. and The CMS displaced dijet Csaba Cs´aki, Phenomenology of a long-livedviolation LSP with R-parity JHEP08(2015)016 6 18 18 20 – 1 – 5 16 14 14 5 15 5 17 13 13 16 19 jets/MET 13 3 6 21 11 µ/e/ 9 7 1 12 14 B.1.4 Efficiencies B.2.1 Trigger requirementsB.2.2 and offline cuts Dijet reconstructionB.2.3 and final event Efficiencies selection B.1.1 Trigger requirements B.1.2 Event selection B.1.3 Vertex reconstruction B.4 Prompt searches B.2 CMS displaced dijet B.3 CMS heavy stable charged B.1 ATLAS DV+ A.1 Monte CarloA.2 tools Tracking efficiency 4.1 Stop LSP 4.2 Gluino LSP 4.3 Higgsino LSP 3.1 Searches for3.2 displaced vertices Searches for3.3 stable particles Prompt searches 1 Introduction For the past three decades,for supersymmetry completing has the been Standardsupersymmetry widely Model provides considered (SM) the the of solution top particle tolie candidate the physics. somewhat naturalness The below problem, the the expectation TeV-scale, was the should that energy if regime probed by the Large Collider B Searches A Data and simulations 4 Results 5 Conclusions 3 Experimental searches Contents 1 Introduction 2 Theory and models JHEP08(2015)016 ], 5 – (1.1) (1.2) 1 ) must charges 1.2 R ) and other ]. Many of the 1.2 12 – and U(1) , 6 . k ¯ L d  j − ∗ k ¯ ¯ d d B i j ¯ u q i q 00 ijk λ 00 ijk η + k + ¯ d ∗ k ], this identification depends on the j ` q j mm, corresponding to particles which i ], all R-parity violation in the visible 27 ¯ u ` , i & q 0 ijk 26 27 ] and references therein). In particular, , λ 0 ijk 25 LSP η 26 + – + c τ k 12 ¯ e ∗ k ) and the non-holomorphic couplings ( – 2 – j ¯ d ` j i ` ¯ e 1.1 i ¯ u ijk λ ijk η + u h 1 i M ` i = µ ) are suppressed either by the SUSY-breaking scale or by the = 1.2 nhRPV RPV K W -, and heavy stable charged particles (HSCP). The aim of this paper is to R Both the standard RPV couplings ( Since all RPV operators are dynamically suppressed, one needs to identify the leading At first sight the inclusion of RPV operators appears to lead to a new set of problems: LHC searches for supersymmetry typically imply the superpartner masses in the mini- be small. This often leadsare to LSP long-lived lifetimes on of collider scales.prompt Thus decay the without LSP necessarily can appear producingperformed in missing searches the energy. for detector Both as such ATLAS andecaying non-prompt and exotic decays, CMS non- including have searches for displaced vertices, The interactions from ( masses. Thenon-standard structure RPV of operators the lead novel to new R-parity-violating and operators distinct ( collider signatures. may dominate, typically thenon-holomorphic, leading non-renormalizable R-parity-violating K¨ahlerterms, operators will originate from the RPV operators in the visible sector.details of As shown the in mediating [ of dynamics the and, fields in responsible particular,standard for on holomorphic the the superpotential breaking U(1) RPV of operators, RPV. One finds that while in some cases the violation via heavy vector-like messengersvisible will sector, give suppressed rise bylight to the fermion effective mass masses RPV scale or operators of thecalled supersymmetry in the breaking dynamical the heavy scale. R-parity messengers Within violation and thissector possibly (dRPV) general originates also framework, [ from by effective higher dimensional operators. each of the plethora ofbaryon- new and couplings -violating introduced processes. hassuppression to of This remain all suggests small RPV in thatwould operators. order there be to A should if suppress simple be theparity dynamical a visible conserving, reason while systematic sector behind R-parity (comprised is such of violated a in the suppression a SM hidden fields sector. and The their mediation of superpartners) R-parity is R- and renewed interest in olderconstraints ideas, from such standard as superpartner R-parity searchesR-parity violation can conservation (RPV) be [ is evaded relaxed ifif the (see the assumption e.g. LSP of [ exact decaysmissing inside transverse energy the (MET) detector, will then not supersymmetry be applicable searches to which these require models. large challenging our preconception of naturalness. mal supersymmetric extension of the Standardmost Model (MSSM) of to be the above 1 parameter TeV,must rendering space manifest itself unnatural. non-minimally. This Thus has if led to supersymmetry many new is ideas to of non-minimal remain models natural, it (LHC). However, Run-I of the LHC did not yield any evidence for supersymmetry [ JHEP08(2015)016 ] ]. ), g 28 32 . In ). In – 5 30 1.1 operator. ¯ e ), (˜ ˜ t ll ] by Zhen Liu and 32 ) and establish the resulting 1.2 ) and ( we briefly describe the experimental we present the models and parameter 3 we present our results in the form of 1.1 2 4 – 3 – ) differs from the holomorphic operators ( ] focuses on various supersymmetric scenarios. Our 1.2 32 ), while others have bounds which apply to both holomorphic b ¯ b ] searches for displaced vertices for the various R-parity violating ¯ ), we concentrate on decays that predict final outgoing jets (in ad- 29 coupling), thus a jet is expected in every final state involving these 1.2 → ˜ t ¯ e we detail the analysis techniques implemented in the various experi- ll ]. Thus we study models with light stops, gluinos, or below B 33 ). ˜ H ) (e.g. and ] and CMS [ 1.2 A . We only consider direct production of LSPs. We study three possible decay 28 1 For the various LSPs, the decay channels considered in this paper are summarized Since a main focus of this paper is the study of the non-holomorphic RPV operators of The paper is structured as follows. In section While this work was nearing completion, a closely related analysis [ is no analog of the operators. An exception whichthe we breaking do of not consider R-parity occurs could be via the bi-linear case terms for orin a via table Higgsino the LSP holomorphic if and Higginos ( the dRPV scenario in ( dition to other possible final-state particles).ture of The the reason non-holomorphic for operators this ( isparticular that there the is SM no gauge non-holomorphic struc- cubic term that contains more than one lepton (there be well below the TeVbe scale, the light gluino as lie well notthe [ too TeV far scale. above the The stop,and LHC and the phenomenology the will Higgsinos nature strongly to ofnaturalness depend expectations, the on we the RPV consider identity operator three of types responsible the of LSP for LSP its particles: decay. stops ( In accordance with the 2 Theory and models The aim of thistaining project a is natural to Higgs explore sector the within RPV the scenarios that supersymmetric are theory. most This relevant requires for the main- stop space which we consider forsearches our considered analysis. in In section ourexclusion plots analysis. in the LSP Inappendices mass section vs. lifetime parameter space.mental searches We we conclude have in recast section and present our procedure used for each channel. Brock Tweedie appeared whichstudies has the a various significant RPV overlap topologies,work with [ also our incorporates paper. the recasting Whileand of our the uses most work slightly recent different ATLAS tracking displaced vertex efficiencies search and [ vertex reconstruction procedures. and non-holomorphic RPV operators.scenario where HSCP the searches LSP byATLAS is and CMS CMS unstable. to are determine We whether reinterpreted also therefor present for exists short-lifetime unexplored some the gaps LSPs. results in Several the for parameterof other prompt space these recent searches searches works for by events have with also displaced vertices investigated on the a implications variety of physical situations [ bounds in the LSP massby vs. naturalness, lifetime where the parameter LSP space.ATLAS is [ Our a focus stop squark, is a onscenarios. gluino the or cases a Some motivated Higgsino. of Weoperators the recast ( the selected main final state signatures are unique to the non-holomorphic explore the final states allowed by the operators of ( JHEP08(2015)016 , ) ∗ ` 1.1  ¯ u q 2 and via D ¯ u of eq. ( q + c.c., with u 0 h λ − u K ⊃ ¯ dl `h t → operator of the non- g 1 2 3 4 4 5 6 6 6 W ⊃ 00 operator due to the an- η 00 λ Results Figure Figure Figure Figure Figure Figure Figure Figure Figure . 4 ). 00 00 00 ) that can give rise to the decays and + c.c. and ˜ η η η η η η 0 0 0 1.2 , , , , , , 1.2 η η η 0 0 0 ¯ ν 00 00 00 λ λ λ ¯ u λ λ λ t is an anti-. This channel occurs ) or from the Operator ν ). While decays to only third generation ) or ( 1.1 → 1.1 1.2 g c.c c.c c.c – 4 – c.c c.c + c.c + + 0 0 Topologies + − ¯ ¯ + ν ¯ + ν d + 0 ¯ u u d ¯ ¯ − d d ν d ` operator in eq. ( d ` + c.c., ˜ ) ¯ Decay ) ) ¯ u 00 0 ¯ d ` ) but is suppressed by the neutrino mass. However, this t t d d η t t/b t/b t/b ( ( tdd 1.2 ( ] to be generated in a simple model of dRPV. The decay 27 → ∓ are down-type SM . Such decays arise either from the g ˜ H 0 ˜ t ˜ g / ¯ is an anti-lepton. The responsible operator may be d 0 LSP are not allowed with the holomorphic is an up-type and ¯ , ˜ + ¯ H l b ¯ d ). u b ¯ 1.2 → operator of eq. ( ˜ t where 0 where where η 0 + ¯ ¯ ν d ¯ of eq. ( u dl d holomorphic RPV operator in eq. ( η . Summary of the various LSPs and their decay channels considered in this paper. The → → → 00 ˜ ˜ ˜ t or for the decay can be induced bywhich effective were Kahler potential shown terms incan of [ the also form beneutrino-higgsino induced mixing. via superpotential terms of the form particles tisymmetry of the colordominate in contraction, the such case decays of are the allowedt and are expected to t λ holomorphic dRPV operators in eq. ( The chiral suppression of the decays from the non-holomorphic operators and the • • • states will dominate both forbelow. the Since case the of stop stop isstop assumed LSP and to and the be for final the the lightest statesan other squark, will the possibilities correspond additional gluino discussed to decays top the via quark, an abovethird off-shell listed generation ˜ final states final for states stop decay again with expected to dominate. Similarly, a neutral Higgsino typical flavor structurequarks of dominates RPV over decays operators to strongly light quarks. suggests Thus that we stop expect that decays third to generation heavy final channels for the stop: Table 1 third column denotes thethe RPV final operators column from points to ( the relevant exclusion plot in section JHEP08(2015)016 ] and 28 in which a 1 − ]. The analysis 3 fb 29 . of data [ 1 − . B and . A B and – 5 – A = 8 TeV with 18.6 fb s The ATLAS search for long lived particles at √ mm proper lifetimes. The searches presented in this paper 7 (3) jets or (4) missing transverse energy (MET). These The CMS collaboration has performed a search for dijets orig- T p jets/MET. -hadrons. For long enough lifetimes, the LSP may hadronize and traverse µ/e/ R ] by increasing the detector volume used for reconstructing vertices. ] considers four multitrack signatures with a luminosity of 20 34 28 ], which together place strong constraints on all of the final states considered in this (2) a high 29 T p The LSP may decay promptly at the primary vertex (PV) or may traverse a finite 8 TeV [ 3.2 Searches forLong-lived stable colored particles particles, suchparticles, as called squarks or gluinos,the form whole composite detector before objects decaying. with Searches SM for slowly moving charged particles constrain CMS displaced dijet. inating from displaced verticesrequires at two hard jetsThe consistent constraints from with this a searchtreated are dijet not as produced limited jets, at to and models adijets, three-jet with giving secondary final dijets. sensitivity displaced states Isolated to have vertex. a significant are variety efficiency of to models. be reconstructed as displaced vertex (DV) with athigh least 5 tracks issearches accompanied are by background free. one of Theat the muon search 8 following: TeV has [ (1) been improved a from the previous study CMS [ paper. The full detail ofand the vertex simulation reconstruction, and are procedure, given including in cuts, tracking appendices ATLAS efficiencies, √ DV+ the ATLAS and CMS trackers.lifetimes, The for SM which background for onlyexcluded, these ranging a searches from is 1 few to negligible. oflook 10 Long the for produced displaced verticesincluding LSPs jets, associated decay leptons, with within and one the MET. of tracker, We recast several can displaced signatures be searches used by for both triggering, ATLAS [ obtained from prompt and HSCPlifetimes studies respectively). as well (corresponding to very short or3.1 long LSP Searches forLSPs displaced which vertices decay in the inner detector can be reconstructed as displaced vertices by both detailed discussion of theRPV individual models, searches, as can well be as found our in methods appendices ofdistance applying before them decaying, to depending onwe the mainly size focus of the on corresponding displaced RPV LSP coupling. decays While due to RPV interactions, we consider the limits decays. A charged Higgsinothe will respective instead final have states. a replacing the3 in Experimental searches In this section, we give a brief overview of the searches we have used for our study. A more LSP decays via an off-shell stop and its topologies are identical to those of the gluino LSP JHEP08(2015)016 ] for ] for 36 46 , 5 – 1 . The HSCP A ] from the Tevatron and 45 – ] when applicable. Higgsino 37 49 , 48 . Our results follow from a detailed CMS has performed a search for 1 ]. 47 = 8 TeV with an integrated luminosity of s √ – 6 – -hadrons, converting them into neutral hadrons by the R ]. Exclusion bounds from prompt searches are directly taken (for vanishing mass) for decays involving , 51 , ˜ N ¯ t 50 decays, R-parity conserving supersymmetric searches [ t . Additionally, tracks associated to the HSCP typically have large + c ) due to interactions with the tracker. Thus, HSCPs are identified → dl g ≈ , ˜ → ˜ v N ˜ t c dE/dx ]. HSCPs have velocities much less than the speed of light leading to misiden- → 35 [ c 1 , ˜ − ˜ N t -hadrons quickly become neutral by interacting with the detector material and are often -hadrons can be either charged or neutral, but interactions with the detector material → ˜ search was recast at thetraverse parton the level detector in before order decaying.tained to from Supersymmetric find the production the LHC cross SUSY efficiencydirect cross sections for production section were an was working ob- unstable calculated group at LSP [ tree-levelapplied to in for Madgraph, all and an masses NLO [ k-factor of 1.6 was In this section we present ourvarious results scenarios for considered the and bounds summarisedMC on in study the table which LSP includes masses all and channelsprocedures, lifetimes and the in designed application the to of the correspond cutsWe to and postpone the the reconstruction various the experimental details displaced vertex and searches. discussion of these procedures to appendix the LHC for t and the R-parity violating ATLAS gluino search [ 4 Results to be belowto 1 the mm primary inhave this production used study, vertex. existing for boundsconsideration. which which We are The the have searches directly decay not used applicable includethe products to recast the fully the of paired prompt hadronic particular dijet prompt the searches. resonance scenarios stop search LSP under decays, at point Instead, CMS searches [ back [ we R neutral before reaching the muon system. 3.3 Prompt searches These searches are relevant for LSPs with small proper lifetimes, taken conservatively may “charge-strip” the charged time they reach thetwo outer models muon of system. thefirst, R-hadrons’ referred To strong account to interactions as for withlight the this the SM cloud-model, possibility, material colored assumes CMS in that particles. considers the the detector. HSCP The is The second surrounded is by a a cloud charge-suppressed of model, in which charged tification in the particleparticles flow with reconstruction algorithmenergy used loss by ( CMS whichby assumes a SM longer time-of-flightR to the muon system or by tracks with anomalous energy loss. LSPs with lifetimes longbefore decaying. enough for a fraction ofCMS the heavy particles stable toheavy stable traverse charged the charged particles detector particle18.8 fb (HSCP) search. at the production rate of a stable LSP. These searches also place strong limits on unstable JHEP08(2015)016 b ¯ ]. b ¯ 36 → ˜ t ] were recast for 35 bottom plot ] have been recast, we only 29 , and in the b ¯ ¯ d → ˜ t via an off-shell top. final state, we studied top and charm ] and CMS [ plot bν 28 + uν W → ˜ t final state, we have considered bottom quarks – 7 – + upper right dl → ˜ t , in the ¯ d ¯ d → ˜ t final state we have considered all combinations of final state bottom ¯ d ¯ d → plot we show ˜ t . 95% CL exclusion curves for fully hadronic stop decays to two down-type quarks. In . Only direct production of the stop has been simulated and the gluino was assumed 1 For the upper left and light down quarks.with all For three the leptonquarks. generations. For this For final the state,than we the have top also in considered which the case case the where stop the decays LSP to stop is lighter table to be decoupled forkinematics, the we determination expect of the productionrate, gluino cross and production section. therefore to Despite the mostlynon-decoupled the gluino affect limits change case. the presented in overall here stop can production be used to estimate the limits for the the searches relevant tothe prompt prompt decays case have requires been recasting included. those searches To and obtain is further4.1 beyond bounds the in scope of Stop this LSP paper. For the case of a stop LSP, we have considered the three final state topologies, as given in display the curves yielding thean strongest unstable constraints. R-hadron. Stable The searches prompt for searches HSCPs here correspond [ to the CMS dijet resonance search [ from the experimental results, and were not recast, implying that only a small fraction of Figure 1 the is presented. While all displaced searches of ATLAS [ JHEP08(2015)016 we left ] and 28 bottom plot ] were recast for 35 ] have been recast, we only , and in the 29 + ]. bµ 53 , → ˜ t 52 , 46 plot ] and CMS [ , 4 28 , 3 . While all displaced searches of ATLAS [ cν – 8 – upper right → ˜ t , in the + be right plot → ˜ t ] were recast for an unstable R-hadron. The prompt searches here correspond and in the 35 tν ]. → plot we show 45 ˜ t . While all displaced searches of ATLAS [ – + 37 . 95% CL exclusion curves for stop decays to a bottom quark and a charged lepton. In bτ . 95% CL exclusion curves for stop decays to an up-type quark and a neutrino. In the ] have been recast, we only display the curves yielding the strongest constraints. Stable → 29 ˜ t we have upper left Figure 3 plot CMS [ searches for HSCPs [ to the R-parity conserving supersymmetric searches [ have display the curves yielding thean strongest unstable constraints. R-hadron. Stable The searches prompt forand searches HSCPs LHC here [ correspond [ to leptoquark searches at the Tevatron Figure 2 the JHEP08(2015)016 . 0 ). 1 ¯ tν d ¯ 8 d , bτ → hadron, ˜ t − R hadron remnant − R final states are also very similar - decays are reconstructed as cν 200 GeV LSP mass is a consequence B ∼ → ˜ t and . One can see that the whole region of natural – 9 – 3 – . One can see that the whole region of natural tν 5 1 – → 4 ˜ t . Only direct production of the gluino has been simulated ¯ tν, tbl final state that may still be somewhat natural. We expect the generations. For the Higgsino, which does not form an tbb ¯ tbb, t d 1500 GeV is excluded for long lived gluinos. There may be a small → < 800 GeV is excluded, except for purely hadronic prompt decay, g ˜ g < 180 GeV cut. m ˜ t > m channel are extremely similar. One would expect the additional displacements final state). The bump in the bound at ¯ d final states to be constrained by same-sign dilepton and other relevant prompt ¯ d bτ , for which this search gives the strongest bounds (ATLAS DV+jets is comparable → tb` cν As explained above, we have not considered the case of light down quarks in the final The ATLAS DV+MET search bounds are presented only for the final states The bounds derived from the The bounds derived from the various combinations of bottom and light down quarks for The results are presented in figures ˜ t → ˜ g searches which we have not attempted to recast here. state, since the boundsFor for the these case are of up expected type to quarks be in similar the final to state, those we with only bottom present results quarks. for top quarks, i.e. corresponding to ˜ and the stop hasThe been results assumed are to presentedgluino be in masses decoupled figures for theprompt region gluino for production the cross section. for the of the MET 4.2 Gluino LSP For the case of gluino LSP, we have considered the three types of final states as in table are derived from theof ATLAS DV+MET great search significance. for WeLSPs final expect and states therefore the with consider same neutrinos, only to this tops be is in not true the for finaland states the for case their of decays. gluino and Higgsino have secondary displacements, but the qualitative differences are expectedexcept to for be the small. ATLAS DV+jetsdecay search. with This larger difference jet isderived multiplicity due from than to final the the states lighter fact with quarks, that top the thus quarks. top strengthening can the However, bounds since typically, the strongest bounds tertiary vertices. We expectdown this quark to for be all stopsimulations the for and case all gluino when other channels a channels inconsidered to bottom consideration. the include quark lighter bottom Thus, is quarks we in exchanged havethe the for confined bounds final our a for states 3rd and have generation not quarks are likely weaker than for light quarks which do not the of the bottom quarks tocase decrease of the two light efficiency quarks. of However, vertexThe we reconstruction found reason with this effect respect is is to notalong the that highly significant with the (see radiation figure stop frombe the decay two reconstructed vertex bottom as contains quarks a tracks before secondary from hadronization. vertex the These even tracks if can the stop masses There is alsoneutrinos, some however allowed we parameter expectsome space that of prompt by the missing these region. energy searches searches for will further prompt constrain decays with JHEP08(2015)016 ] 35 bottom ] and the 5 , ] have been 2 29 , while in the ). While all displaced tbµ right → ( ] and CMS [ g 28 ¯ tν t plot ˜ ) and left ( tbb upper right ] were recast for an unstable R-hadron. The 35 – 10 – , in the tbτ → ] have been recast, we only display the curves yielding the g 29 -)jets are not shown here, and are expected to constrain prompt decays. b plot we have ˜ ] and CMS [ ]. . Although all displaced searches of ATLAS [ 28 47 tbe → upper left g . 95% CL exclusion curves for gluino decays to a top, a bottom quark and a charged . 95% CL exclusion curves for gluino decays to lepton. In the plot we have ˜ recast, we only display thewere curves yielding recast the strongest for constraints.events, an Stable and/or searches unstable multiple for ( R-hadron. HSCPs [ LHC searches for 3 or more leptons, same-sign leptons Figure 5 searches of ATLAS [ strongest constraints. Stable searchesprompt searches for here HSCPs correspond [ toRPV the gluino R-parity search conserving [ supersymmetric searches [ Figure 4 JHEP08(2015)016 ] tbb 29 → plot we 0 ˜ H ] and CMS [ bottom 28 have very similar . We decouple all ¯ dν 6 t plot we show . Approximately 61% ˜ H → g m , and in the ' bbτ and ˜ upper left µ → ¯ cν t ∓ ˜ H → g and tbτ → – 11 – 0 ˜ H -)jets are now shown above and are expected to constrain b plot . The ratio of neutral to charged Higgino lifetime depends on their btν → upper right ∓ ˜ H . As noted above, the decays ˜ 300 GeV. This region is expected to be constrained by prompt searches ¯ tν t and ∼ , in the → ] were recast for an unstable Higgsino. LHC searches for 3 or more leptons, same- ttν g bbb 35 → 0 . 95% CL exclusion curves in the charged Higgino lifetime vs. mass plane, for Higgsino → ˜ H ∓ ˜ H the superpartners except formechanism the may stops, be which we subdominantsidered. take to to However, gluino be we or degenerate. obtainconservative stop limit strong This which production, bounds production rules from whichlifetimes out direct we above Higgsinos production have up alone, not to allowing con- 800 for GeV, a except for a region of short For the case oftral Higgsino Higgsinos. LSP, we We havecorresponding simulated considered mixing the direct production production matrices ofof of for charged both produced the and particles Higgsinos relevant neu- value simultaneously aresensitivity using of to charged the over long-lived the Higgsinos. full The range results of are masses, plotted giving in HSCP figure searches the channel ˜ constraints for all channels. 4.3 Higgsino LSP present mass and is indicated onhave all been three recast, plots. wefor While only HSCPs all displaced [ display searches thesign of curves ATLAS leptons [ yielding events, the and/orprompt multiple strongest decays. ( constraints. Stable searches Figure 6 decays to a top,and a bottom quark and a charged lepton. In the JHEP08(2015)016 , 6 – bbτ final 1 . The → bτ 6 ) ∓ ). All re- ˜ H t/b 1.2 and below 200 GeV, ], as well as some 0 tbτ ˜ 35 H plane in figures → coupling, the decay is 0 00 η ˜ LSP H τ − , or a Higgsino in figure 5 LSP – lifetime. For m 4 ∓ . For each coupling under considera- ˜ H 1 800 GeV. The only significant unconstrained final states as well as other prompt searches. . final states, same sign di-lepton for ( tν ˜ – 12 – H ) 1 mm, are excluded for the natural SUSY mass re- m bb ) leptons in the final states since we expect the bounds t/b & , a gluino in figures τ coupling, the decay is either t/b 3 cτ 0 – η ) or the non-holomorphic dRPV operators of ( 1 1.1 . In each case, the neutral (charged) Higgsino decays into an 1500 GeV or ] and the ATLAS search for multitrack displaced vertices + btν . . For the 29 ˜ g → bbb m ∓ → ˜ ], which we have fully recast and applied all cuts and vertex reconstruc- H ∓ 28 ˜ H and ]. We also thank Jeff Dror, Gauthier Durieux, Yuri Gershtein, Kevin Mc- 800 GeV, 28 and , the ATLAS DV+MET search becomes important for masses where the neutral ttν . 6 ˜ t → tbb m 0 The charged and neutral Higgsinos have different lifetimes due to differences in phase We have simulated three channels, given in table → /jets/MET [ ˜ H 0 ˜ Acknowledgments We are grateful toregarding Avner [ Sofer andDermott, Nimrod Wee Hao Taiblum Ng, for Torbjorn many Sjostrand, important Peter clarifications Skands, and Jordan Tucker for useful various plots for a given LSP correspondholomorphic to RPV different operator decay of channels ( either fromgions the with ordinary significant displacement, gions regions are those corresponding to prompt stop decays to dijets or prompt Higgsino decays. µ/e tion procedures. In addition weof also the considered leading the prompt CMS searches HSCPcasting. search whose [ exclusion Our bounds main can results bewhere are the directly the LSP applied exclusion is without plots a re- in stop in the figures 5 Conclusions We have considered theviolation experimental and bounds a long-lived on LSP.displaced supersymmetric The dijet theories main searches with search providing R-parity [ the constraints are the CMS are due to the presencein of two figure different average lifetimes inHiggsino each data becomes sample. long-lived For and example, 200 GeV contributes due to to the MET. presence of Prompt longer lived lifetimes neutral are Higgsino which ruled decay within out the tracker. at for lighter generations to differ very slightly as wasspace shown of for the the final casethe states. of Higgsino a The gluino decays plotted LSP. via lifetimestable an is due the off to phase shell space top. suppression. At The qualitatively 100 GeV, different the features of neutral these Higgsino results is effectively or off-shell stop and a topdown (bottom) type quarks quark. in The thelighter stop final generations then state, are decays we very via consider similar. thetop only RPV For quarks, bottoms up coupling. quarks again type since For since quarkssame. the in the bounds Furthermore, the bounds we for final consider for only state lighter we consider generations only are expected to be almost the states and prompt MET searchesRecasting for these ( searches is beyond the scope of thistion, paper. the charged and neutralH Higgsinos decay differently. For the for large jet multiplicity events for ( JHEP08(2015)016 ] and -hadron 57 [ R ], utilizing 54 30 cm is imposed, Delphes 3 < color flow associated 0 d αβγ ]. The final reconstruction  62 detector has an inner detector event-generator [ , which assumes tracking effi- , of each track. In addition to tracking T ] and are parametrized as a function of p Delphes 3 61 Delphes 3 Madgraph5 ], which allows the ] drop off rapidly for vertices displaced from the – 13 – 56 [ 62 , ]. Hadronization, parton showering, and 61 55 [ Pythia 8 . For the detector simulation, we use ] and CMS [ , ATLAS vertex reconstruction efficiency also drops off steeply at a operators. Long-lived particles are displaced before passing events Feynrules 60 0 ¯ d d , and transverse momentum, ¯ d 0 Pythia u d to ] with the default ATLAS and CMS detector geometries, resolutions, and and ¯ ∗ 58 ] is used to cluster jets according to track and calorimeter information from ¯ [ d 59 [ qq Madgraph effect, we add an additionalwhich originate factor outside of of 75% the second toare pixel the simulated layer. under track The reconstruction Run CMS efficiency track 1production reconstruction for tracking radius. efficiencies tracks conditions [ Amotivated cut by displaced on tracking track efficiencies transverse for cosmic impact parameter [ vertex. This effectcies is based incorporated on simulated in displaced ourdetectors. track analysis reconstruction For efficiencies by the of assigning ATLAS theimpact displaced detector, parameter, ATLAS and tracks we CMS use efficien- efficiency an falloff efficiency with parametrized byradial the distance corresponding transverse to the second pixel barrel layers of the ID. To account for this efficiencies in ATLAS [ origin. For the ATLAStracking and techniques CMS (“re-tracking”) displaced are used vertex todisplaced searches regain tracking presented some algorithms, in of the the this probability lost to work,inner efficiency. reconstruct offline detectors Even a with depends track in on the the CMS track’s or ATLAS orientation and the displacement of its production A.2 Tracking efficiency The standard trackingciencies simulation for provided particles in originatingtracking from efficiency the for PV, tracks provides originating a from poor displaced vertices. reproduction of The track the reconstruction actual (ID), electromagnetic and(MS). Charged hadron SM calorimeters particlesFastJet are (ECAL/HCAL), propagated and inthe a Delphes a particle-flow uniform muon reconstruction. magnetic Trackingbut system vertex field nearby resolution vertices in is are taken the merged to tracker. in be the perfect, vertex reconstruction procedures. physics are simulated using with the from ROOT 6.02 efficiencies (excluding tracking efficiency). The A Data and simulations A.1 Monte Carlo tools Parton level eventsmodel are files generated created using by the O.S. and T.V. areis supported in further part supported by byCurie, a the CIG grant US-Israel fellowship from and Binational the by Scienceand Israel the the Science I-CORE Foundation, Israel Program Foundation. the of Science T.V. EU-FP7 the Foundation Marie Planning (grant Budgeting NO Committee 1937/12). discussions. C.C., E.K. and S.L. are supported in part by the NSF grant PHY-1316222. JHEP08(2015)016 45 GeV -hadron R > T p 40 GeV > T p algorithm with size pa- t k 55 GeV or six jets with > T p search is: ] multitrack search for displaced vertices along – 14 – 28 -hadrons decaying in the tracker may have tracks R 120 GeV or two , each with > DV+MET T -hadron tracks are reconstructed. Therefore, it is reasonable -hadrons in this study. The curvature of charged p 07 to be within the MS acceptance . R R jets/MET 1 < 80 GeV or five jets with -hadrons which decay in the tracker are assumed to not reconstruct | η > search, a trigger is implemented since with large R µ/e/ | -hadron decays and the details of the tracking algorithm. Tracks T R search, a trigger muon is required to have: p search, jets are reconstructed using the anti- 6. The trigger requires: . 80 GeV -hadrons which decay in the beam pipe do not register hits in the detector = 0 > R 50 GeV R > DV+electron DV+jets DV+muon miss T T four jets with E either one photon with p pseudo-rapidity tracker hits both in the ID and MS 2 mm in reconstructing displaced vertices. The CMS dijet search allows for only one Tracks of charged hadron would appear to be prompt because it points back to the primary vertex (PV). • • • • • • < − 0 rameter ∆ The trigger requirement for the transverse impact parameters maymay not be have identified as a photons.transverse measured momentum. The track search The in triggers requirement the on is: inner either one detector or and two photons withFor large the For the with our procedure. Trigger andgies selection cuts while vary displaced between the vertex different reconstruction final remains state the topolo- B.1.1 same for all cases. Trigger requirements For the B Searches B.1 ATLAS DV+ In this section, we describe the ATLAS [ d prompt track to be associatedevents to in each displaced which jet, the so charged theto search neglect could retain the sensitivity track to trajectories, of typically the small due to the large momentum, is neglected. of charged and therefore are notwhich reconstructed. exhibit multi-prong decays orstruct which properly disappear depending altogether, onR and the may also reconstruction not algorithm.The recon- ATLAS The multitrack DV track search ignores from prompt the tracks with charged transverse impact parameter on their parameterization either as a function of productionand radius are or neglected impact in parameter. structed this by ATLAS study. or CMS, It butbefore this is the depends possible on charged that the tracker some hits registered of in these the tracks detector could be recon- efficiencies do not strongly depend on the the shape and scale of the tracking efficiency nor JHEP08(2015)016 55 GeV > T p 5 and invariant ]. Following this ≥ 28 tr -hadron or Higgsino N R -hadrons themselves since they R 5 mm and is required to pass within 65 GeV or six jets with . 1 > > T search. A charged 0 p d – 15 – DV+MET search are stricter than the trigger requirements requiring: 90 GeV or five jets with search, the cuts are similar to the muon trigger, requiring: > T search, the requirement is: p search cuts require the electron candidate to have: DV+jets 180 GeV 10 GeV, where each track is assigned a charged mass for the invariant 48 07 . . DV+muon > > 125 GeV 55 GeV 2 1 > > < < DV+MET DV | | miss T T T η η four jets with E p p m DV+electron | | There is a subtlety regarding whether LSPs which escape the tracker contribute to the Cuts for the All events must have a reconstructed DV with track multiplicity For the • • • • • • 5 mm of a reconstructed DV. . For LSPs decaying inthe the event. MS, We neglect chargedare the decay calorimeter expected products deposits to are from beregions not the small. of included the in This detector the METnot is reconstructed MET reconstruction a and procedure of conservative will approach for contribute since, decays to in the in reality, MET the some of various of these events. this energy is to the energy of theproducts. event In either our from analysis, calorimeterentire we deposits detector treat such or and LSPs from leave as a themomentum follows: of track tracks the in charged of LSP’s LSPs the its track which ID does decay the traverse not are the decay contribute reconstructed to products as MET. of Transverse muons energyis either and deposited removed charged by the from or transverse the neutral MET LSPs of which the decay within event with the the calorimeter exception of neutrinos in the final state. transverse energy of the eventwhich for decays the outside of thein entire detector the may MS be and reconstructed thereforewhich as decay be a outside muon included of from in the its the ID tracks energy but of within the the event. calorimeter or LSPs, within charged the or MS neutral, may contribute For the Furthermore, for both lepton searches,to a the transverse lepton impact parameter track which must0 satisfies be displaced, corresponding The leptons must have a truth level origin within themass ID. mass determination. Offline cuts filteranalysis. displaced tracks The which details undergoprocedure, of a final these re-tracking event cuts procedureanalysis, selection and we prior the cuts require the to re-tracking are final are final MET event implemented since selection given for they criteria in are on the [ more the restrictive various reconstructed than leptons, channels. the jets, trigger and requirements In in all our cases. The trigger B.1.2 Event selection JHEP08(2015)016 < xy L DV+jets 300 mm and 20 mm, which < − xy ]. For the ]. ˆ 28 p > < L · 28 ~ d 1 GeV and impact parameter > T p – 16 – ] which clusters seed vertices iteratively. A seed vertex is 28 1 GeV. All tracks are extrapolated in the direction opposite 20 mm in consistency with the seed vertex track requirement − > T is the seed track’s momentum. After the tracks are clustered into p 300 mm with respect to the PV. In order to minimize background ˆ p > ] as dense material regions of the detector. · ~p < ~ 28 d | DV z | 2 mm and > 0 300 mm. Our vertex reconstruction algorithm searches through all tracks that satisfy d 2. The truth level origins of all tracks must also satisfy 4 mm For the DV+lepton channels, lepton tracks are extrapolated in the opposite direction For our analysis, vertex reconstruction is identical for all the final state searches. Tracks After vertex reconstruction, DVs are further required to have transverse distance < > is defined as the distance vector between the position of the DV and that of the first | 0 z ~ tracks are extrapolated and not required to be directlyB.1.4 associated with the Efficiencies DV. With these assumptions for vertexingpendence and tracking of efficiency, the we efficiencies reproduce for the the lifetime models de- and channels provided in [ could, in principle, reconstruct these verticestrack with separately. only The one ATLAS DV. study However, associates theDV each lepton and track is may not therefore requireddecay to pass fit products to within the of 0.5 reconstructed veryour mm boosted procedure from since bottom multiple truth or vertices, level charm tracks as quarks. are in always the associated This case with is only of taken one the into DV account and in lepton of their momenta. Theof extrapolated closest track approach is toimplications then the for required signals reconstructed to with DV havein final of a additional state 0.5 maximum bottom displacement distance mm. or from charm the This quarks LSP since procedure decay these has vertex, decays and important result the DV clustering algorithm as the average positiontheir of distances all are of less the thanrequired track 1 to origins mm satisfy in apart. the Furthermore,detailed group. at above. least DVs DVs two are are tracks thenthe in vetoed combined ATLAS each at study if DV positions [ are in the transverse plane which are mapped by considered for vertex reconstruction are requiredd to have | these criteria and iteratively clusters theira origins. 1 mm First, radius two track from origins one which another are are within grouped together as a DV. The DV position is defined 300 mm and from tracks originating at a4 mm PV, from each any DV primary mustare vertex. also vetoed Finally, have using DVs a a situated transverse 3D within distance map dense of regions of at of the least the transverse detector plane of the detector [ defined as two coincidingensures tracks consistency between which the each positiond satisfy of the the vertex criteria primary and momentum vertex of and thevertices, track. any Here reconstructed DVs within 1 mm are merged into a single vertex. Events satisfying the trigger requirements mustVertex also reconstruction contain in at the least ATLAS onewith search reconstructed is DV. performed considering onlyto displaced their tracks momentum. Tracks whichof pass an the algorithm criteria are detailed used in to [ reconstruct DVs by means B.1.3 Vertex reconstruction JHEP08(2015)016 . In (B.1) DV  DV+lepton . and have been used in our calculation 2 DV 7  selection criteria, which is strong enough i − xy L DV h  – 17 – = 2 ev  . 4 , through, = 200 (red), 300 (green), 500 (orange), 1000 (blue) GeV. Efficiencies generally DV channels, only event-level efficiencies are calculated since the cuts for these  ˜ t m . Example event-level efficiencies for the ATLAS displaced vertex searches. Efficiencies ] performs two searches for signals with high and low average transverse displace- 29 DV+MET , is defined as the probability for a signal event containing two DVs to satisfy all selec- ev B.2 CMS displaced dijet CMS [ ments. We recast the studyto using place the limits high- onpaper. the full range of displaced lifetimes for the models considered in this level efficiency, Example event level efficiencies are shownof in the figure exclusion plots in section channels, vertex-level efficiencies areciencies. calculated We and accept then upconsistency to translated with two into the DVs ATLAS event-level per study, effi-  for event the and DV+lepton calculate channels, a thetion DV event criteria level level efficiency, for efficiency, at least one of the DVs in the event. This definition relates to the vertex are shown for increase with increases stop mass. and channels are required at the event level and not at the vertex level. For the Figure 7 JHEP08(2015)016 , xy L algo- σ T 8 40 GeV k 300 GeV, > > > T xy p T L H m for all DVs as a conservative µ 5 mm, associated to each jet pair . , to be significant if 0 xy m given the good resolution near the L > µ 0 d – 18 – be a constant 300 xy . The primary vertex resolution for CMS is 12 microns L xy m. L is better than 300 µ 325 GeV for the fully reconstructed jets, using anti- 2, xy > L < T | η H | ], which is negligible compared to the uncertainty in the secondary 5. For our jet reconstruction, we use track and calorimeter information 63 . = 0 R is the uncertainty in 60 GeV and m, is the sum of the transverse energy of all the jets in the event with µ 3, and at least two displaced jet candidates (isolated leptons are also considered) xy > T L < T H σ | at most 2300 associated tracks with three-dimensionalat most impact 15% of parameter theparameters less jet less energy than than is 500 carried by associated tracks with transverse impact p η | For final event selection, further selection criteria are imposed for each displaced dijet The offline event selection cuts are similar to the triggers. The total transverse energy • • • center of the detector.decays which This occur cut this does closeand not to fail significantly the the affect requirements PV the of begin final the to displaced-jet efficiencies have trigger. tracks because whichcandidate point passing back the to the above PV criteria. Clusters of maximal track multiplicity are formed where in each dimension [ vertex. We take the uncertaintychoice, in requiring the displaced vertexvertex to in be at the a transverse distancerelevant), plane. of the 2.4 For resolution mm decays of away with from short the primary decay lengths (for which this cut is tracks if their truth-level originsvertex are is within found a distance between of theof 1 two the jets, mm. two we If jets take more the mustmust than one be have one with significantly at displaced largest displaced least from track onethe multiplicity. the track transverse Each primary originating displacement vertex from of of the the a event. secondary secondary The vertex, vertex, search which considers are grouped together andradial fitted distance greater to than a 50longer cm common contain have secondary 3D zero information, acceptance vertex. and becausethe the the Tracks tracker search strip with originating requires stereo tracker at tracking layers track information. no seeds a which to The is be full not analysis within uses easily the an implemented. part adaptive of vertex We fitter mimic the vertex fitter by merging the origin of two selection criteria made by CMS. B.2.2 Dijet reconstructionEvery and jet final pair event is selection tracks, checked defined for by consistency transverse impact with parameter the displaced dijet hypothesis. Displaced At trigger level, jets are clustered according to calorimeterrequirement information is only. raised to rithm with ∆ from the Delphes particle-flow reconstruction, and cuts are imposed according to the offline CMS uses a dedicatedwhere displaced-jet trigger for thisand search which requires each satisfying: B.2.1 Trigger requirements and offline cuts JHEP08(2015)016 ± 15 . 0 ± 13 . search requires the i together in a cluster. xy xy L h ) with the trajectories of L T p 15 . -jets, the efficiencies are lower in b ] to form the vertex and cluster 29 , and the fraction of secondary vertex of individual tracks are clustered using track xy L -quarks. track xy s L . For this recast, we approximate this procedure – 19 – - and d xy L is determined by finding the intersection of the dijet 15 . 4 GeV track xy L within a transverse distance 0 > . track xy track xy 8 GeV L L > T p search observed 1 data event with an expected background of 1 i xy L decay channel than in decays to h ¯ . Example event-level efficiencies for the CMS displaced dijet search. Efficiencies are shown d b ¯ = 200 (red), 300 (green), 500 (orange), 1000 (blue) GeV. Efficiencies generally increase with at least one track from each jetinvariant belongs mass to of the cluster cluster sum of track ˜ t → Finally, a background discriminant is formed by the secondary vertex track multiplicity, ˜ t • • • m 50. This places the excluded number of signal events for 95% confidence level at 3.7. . than 9%, and no more than oneB.2.3 prompt track associated to Efficiencies each jet. The high 0 parameter discriminants since wesearch do and not the vertex implement and the clustermost clustering track significantly multiplicity because algorithm affects background the used DVs typically value by have ofto low the the track signal full multiplicities compared discriminant DVs.multiplicity discriminant. We The use finalbackground the event discriminant selection distributions to for be given less the in than high 0.8, [ prompt track energy fraction for each jet less Tracks are assigned thevariant mass mass. of the charged pion for thethe purpose cluster track of multiplicity, the determining cluster RMS thetracks of in- having positive signed impact parameter. We neglect the RMS and signed impact transverse momentum (the sumthe of individual the tracks. two In the reconstructedan full jet algorithm analysis, with the size parameterby 0 grouping tracks with The associated track cluster must also satisfy: for increases stop mass. Duethe to the additional displacement of the from displaced tracks associated toof dijet each candidates individual based track, on the transverse displacements Figure 8 JHEP08(2015)016 , 0 H and T p ], and the 64 ). The study ¯ -hadrons. The dµ u R 40 GeV measured 3 MeV/cm. is neglected due to → > 0 1 T χ p (˜ q dE/dx → dE/dx > q 150 GeV. The L1 muon trigger and have been used in our cal- 8 > 1, and a . 2 miss T E < tracks in the MS. -hadrons. For charged higgsinos, we apply | -hadrons and the charge-suppressed scenario particles, which then decay into dijets, and η T R | R p 0 -Hadrons. The upper limits for stop and gluino X . – 20 – R 4 -hadron tracks in the muon system, so we choose in the event. In such cases, the HSCPs are still R 45 GeV, miss T > E T p ]. 35 proper lifetimes from 0.1 to 200 cm. We match the reported efficiencies 0 1 χ and ˜ 0 -hadrons or HSCPs that become neutral do not leave tracks in the muon X R The results are interpreted in terms of stable gluinos and stops, placing upper limits of It is straightforward to reinterpret the search results for unstable Triggered events must have either a reconstructed muon with Example event level efficiencies are shown in figure cut that survive the length of the detector. The cut on | η CMS performs a “tracker-only,”“tracker-only” search “tracker+time-of-flight,” is and sensitive to “muon-only” standard search.because it The does notto rely recast on this a search charged the for “tracker+time-of-flight” the search. case of unstable long-lived particle is required tochoice survive the as entire it detector neglects distance. stopsthe This that full is decay analysis a in due conservative the to muon the tracker presence which of may high still1322 be (1233) picked GeV up and by 935 (818) GeV in the cloud (charge-suppressed) model, respectively. production cross section| are rescaled byour the limited percentage detectorthe of simulation. detector events is passing Efficiencies foundbetween the by for 100 GeV–1 simulating TeV the parton-level and coloredThe events detector gluino for particle is production stop taken to to production with be decay with masses a outside cylinder masses between with 100 radius GeV–1.5 of TeV. 7m and 11m half-length [ identified by theselection anomalously requires high a track energy with loss in theexcluded inner cross sections tracker. derived fromand the The reconstruction full CMS efficiencies offline analysis for already data stable includes the acceptance bunch crossing or within theNeutral following 25 ns timesystem. window before Consequently, the next theynot bunch are reconstructed crossing. rejected as by objects.calorimeter, the there However, online is since particle large it flow large only algorithm leaves and 10-20 GeV are of energy in the may be sensitive toCMS the search presented scenarios in considered [ in this paper.in Here we the briefly ID describe orcan the a accept large slowly missing moving transverse particles energy arriving in the MS within the 25 ns of the culation of the exclusion plots in section B.3 CMS heavy stable chargedIf particles the LSP lifetime is sufficiently long, searches for heavy stable charged particles (HSCP) decaying into a pair(2) of squark long-lived pair neutral production, inconsiders which each squark decaysresults via within ˜ 20% over the full range of lifetimes for both 2-body and 3-body final states. The results are interpreted in the context of two models: (1) a heavy scalar particle, JHEP08(2015)016 , ˜ N the c t is the -quark → b ˜ N c < m ˜ t m 6) jets search 6) jets search = 0 GeV. These ≥ ≥ , where . The applicable . The applicable ˜ N ]. For ˜ ˜ ˜ N N N m t ¯ ¯ t t 52 t t → ], and take the search to → → ˜ t -quark final states. 47 b g g [ ]. tbs 65 ] decays of the leptoquark. Con- ]. 4 → 45 ] and ATLAS [ – g = 0 GeV. The strongest bounds are 200 GeV the bounds are taken from ] and 1 lepton and ( ] and 1 lepton and ( 5 5 53 43 ˜ [ N < ˜ t + m events [ bτ ¯ t t < m t – 21 – m ], and 42 – 40 [ = 0 GeV. The strongest bounds are derived from the 0-1 = 0 GeV. The strongest bounds are derived from the 0-1 + ), which permits any use, distribution and reproduction in ] and for 3 ˜ ˜ ]. The applicable bounds are those for -jet multiplicity. sµ N N b ], m m 46 -jets search from ATLAS [ -jets search from ATLAS [ 39 b b – 37 3) 3) [ CC-BY 4.0 ≥ ≥ + ]. ]. This article is distributed under the terms of the Creative Commons 2 2 de is the LSP [ ]. Constraints for light quark searches are taken to be valid for . We study LHC supersymmetry searches for ˜ . We study LHC supersymmetry searches for ˜ . The main prompt searches are the paired dijet searches performed at . We consider leptoquark searches from the Tevatron and the LHC. Searches . We study the ATLAS RPV search for ˜ . We consider LHC supersymmetry searches for . We consider ATLAS supersymmetry search for charm squarks, ˜ ˜ ¯ d 36 N ¯ ¯ + tν tν ¯ ¯ ν ν ¯ d t t t c tbb d` → → → → → → → ˜ ˜ ˜ ˜ ˜ ˜ ˜ g be valid for additional g bounds are those for leptons and ( from CMS [ t LSP. The applicable boundsderived are from the those 1-lepton for searchesbounds from CMS are [ taken fromthe [ measurement of spin correlations in g bounds are those for leptons and ( from CMS [ formed for straints for light quark searches are takent to be valid for where bounds are much stronger than the monojet search [ CMS [ final states. t for are performed for “generation” leptoquarks, i.e., searches are per- t Prompt searches may also apply to LSPs with large enough boosts such that its decay • • • • • • • detector and tracking algorithms,for it longer is lifetimes not and known we how therefore the doOpen not prompt consider Access. search this bounds possibility. Attribution extend License ( any medium, provided the original author(s) and source are credited. products point back toreconstruct the tracks with PV. large Specific transverse displaced impact tracking parameter. algorithms must Without be simulating used the to full For our analysis, prompt searchessubset have of not prompt been searches whose recast. boundsRecasting can Instead other be we searches directly have applied may studied toconsidered possibly a the here: partial scenarios result of with interest. more competitive limits than the ones B.4 Prompt searches JHEP08(2015)016 B ] , D 1997, B 151 D 88 ]. Nucl. Phys. , Phys. Rev. TeV (2014) 328 (2014) 124 , SPIRE ]. TeV in events with IN arXiv:1407.0600 = 8 06 [ Phys. Lett. ]. ][ s Phys. Rev. , , = 8 (2005) 1 √ B 733 Beyond the desert SPIRE s (2013) 064 IN √ JHEP SPIRE TeV proton-proton collision 420 , in ][ , ]. TeV using the ATLAS IN 04 -jets at ]. (2014) 024 ][ = 8 Adv. Ser. Direct. High Energy b = 8 , s s 10 SPIRE √ Phys. 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