JHEP09(2019)120 c Springer August 2, 2019 August 31, 2019 : : September 16, 2019 : , Received Accepted Published and Dominik St¨ockinger c Published for SISSA by https://doi.org/10.1007/JHEP09(2019)120 [email protected] , [email protected] , Wojciech Kotlarski b . 3 Jan Kalinowski, 1907.11641 a The Authors. 7 TeV, approximately 600 GeV lower than in the MSSM. . 1 c Phenomenology

R-symmetry leads to a distinct low energy realisation of SUSY with a sig- , > [email protected] ˜ q m [email protected] Notkestraße 85, 22607 Hamburg, Germany Faculty of Physics, UniversityPasteura of 5, Warsaw, 02093 Warsaw, Poland Institut f¨urKern- und Teilchenphysik, TUZellescher Dresden, Weg 19, 01069 Dresden,E-mail: Germany Deutsches Elektronen-Synchrotron DESY, b c a Open Access Article funded by SCOAP limit is Keywords: ArXiv ePrint: impact of R-symmetry onof the the squark Minimal and R-symmetric gluinoNLO Supersymmetric mass corrections limits. Standard to the Model We squark andavailable work production recently. in take cross We into the sections find account framework in substantiallyMSSM: the the weaker for MRSSM limits simple that scenarios on have with become squark heavy masses compared and to degenerate squarks, the the MRSSM mass Abstract: nificantly modified colour-charged sector featuring(sgluons). a Dirac In the and present scalar work colour we octets recast results from LHC BSM searches to discuss the Philip Diessner, Confronting the coloured sectorLHC of data the MRSSM with JHEP09(2019)120 ] is such a 1 8 4 3 3 6 – 1 – ], MRSSM electroweak phenomenology has been 2 8 – = 2 SUSY multiplets in the gauge and Higgs sectors. 4 N 10 6 1 8 ] which does not commute with SUSY and, as an indirect consequence, Dirac 2 ]. In a series of papers [ 3 , no flavour mixing mixing 1 Thanks to the additional symmetry the phenomenology of the MRSSM is distinct from The Minimal R-symmetric Supersymmetric (MRSSM) [ 3.2 Scenario B: mass splitting between left- and right-handed3.3 squarks, no flavour Scenario C: flavour mixing between first and third generation 2.1 Strongly interacting2.2 sector of the Tree-level squark MRSSM 2.3 production at the Calculational LHC details and uncertainty estimation 3.1 Scenario A: squarks of the first and second generation degenerate in mass, tors, thus allowingsectors large [ flavour mixingfound and to rather be light richmass and masses for successful. in stop The the massesservables, model in squark/slepton and can the it accommodate 1 can TeV the explain range, the observed it observed Higgs is dark compatible with relic electroweak density precision without ob- conflict with degree of symmetry andR-symmetry therefore [ less free parameters.instead It of features Majorana a continuous and unbroken the one of the MSSM.R-symmetry It effectively constitutes suppresses a flavour-violating potential contributions solution in to the the / SUSY sec- flavour problem; the has been found sothat far SUSY at is the realizedand LHC. in elsewhere a The as non-minimal reason compared to form, for the which the Minimal leads non-discovery Supersymmetric to of Standardwell-motivated weaker SUSY Model alternative signals (MSSM). might to at be the the LHC MSSM. It has more degrees of freedom but a higher Supersymmetry (SUSY) is a new fundamentaland symmetry which links extends Poincar´esymmetry andmasses, . making the It electroweak impliesmotivated scale ideas the technically for absence the natural. of physics beyond SUSY quadratic the remains divergences Standard Model, one to even of scalar though the no sign best for SUSY 4 Conclusions and outlook 1 Introduction 3 Squark mass limits in the MRSSM Contents 1 Introduction 2 Relevant details of the MRSSM JHEP09(2019)120 ]. The main 18 is assumed to be +1). As θ ] have investigated the coloured sec- 17 – 9 . Because of this, the overall squark produc- † R ˜ q – 2 – R q , ˜ † L ˜ q L q and ˜ R ˜ q L q (where, by convention, the R-charge of θ iα e → θ (10%), depending on the involved mass ratios. the difference typically amounts to 10 to 20%. gluino and the existenceO of the scalar , can shift the K-factors up or down by lowed channels are ˜ tion rate is lower than in the MSSM. Specific properties of the MRSSM loop corrections, such as the Dirac nature of the the R-symmetry forbids several important squark production channels; the only al- For the same reason, the overall K-factors in the MRSSM and MSSM are different; Below we collect the relevant properties of the coloured sector of the MRSSM and One of the main motivations for R-symmetry is that it suppresses unwanted flavour- In the present paper we focus on the coloured sector of the MRSSM in the context = 0 to SM fields in the MRSSM implies non-vanishing R-charges for , (3) (1) (2) and CP-violating processes byIn eliminating addition the trilinear symmetry soft forbidspotential SUSY-breaking - as and scalar well lepton-number couplings. violating as terms dimension-five in operators the mediating super- decay. describe computational setup for recasting LHC search limits. coordinates a result, R-charges of componentR fields of a superfieldtherefore differ R-symmetry by can one be unit. viewed Assigning as charge a continuous extension of the discrete R-parity. distinct MRSSM squark scenarios. Finally, conclusions are given in section 4. 2 Relevant details of theR-symmetry MRSSM is an invariance under a continuous U(1) transformation of Grassmannian The present paper will providecount updated available limits LHC on results coloured and sparticle theIn masses, NLO the taking K-factors. into next The ac- section outlineing we of sector the recapitulate of paper the is the mostframework. as MRSSM follows. important Section relevant features 3 to presents of the our the present results strongly analysis of interact- recasting and SUSY outline searches the at computational the LHC in three of LHC searches forlimits new for physics squarks, signals.purpose assuming we that In recast the particular squarks LHCof we are search the results ask the squark to what production the lightest cross MRSSM. aredifferences coloured section Recently, between the a in sparticles. the full the LHC NLO MRSSM MRSSM mass calculation has and For become MSSM this available predictions [ are as follows: flavour violation experiment. Furthermore, refs.tor [ of the MRSSMNLO or corrections; these analogues references models, haveexpected based shown to that on be the tree-level significantly mass weaker calculations limits than or in in estimates the the MRSSM of MSSM. can be direct dark matter searches and it can lead to interesting signals in g-2 and lepton JHEP09(2019)120 ˆ , = O  and R (2.1) ¯ q . The q ˜ 2 g 2, with m √ + h.c. / a ) p + 4 O a and antichiral collisions only 2 O iO = 0 — a com- D m iL 2 + pp ˆ R s Q √ q with R-charge  O = 2 SUSY multiplet. ˜ = g iL N s 1. Squarks of different m = ( q O − + O m 1, and in ˜ g = ˜ g  ˜ g R and m O is the usual auxiliary field in the − = +1. Its left-handed component 2 m a | a R D = O | p O 2 O functions motivate scenarios in which the m m β − with R-charge – 3 – jR iR ˜ q q † iR ˜ q ij ) ; it has no direct couplings to or squarks. R † ˜ 2 q ˆ , there is a “left-handed” squark ˜ O i m q ( 1 2 . The right-handed gluino component is part of an additional − ˆ V = 0 are allowed. As a result, in hard processes initiated by ] for detailed discussion). jL ˜ q R 18 . † iL ˜ q † iR ij ˆ Q ) pairs, produced squarks must have opposite chiralities as illustrated in L ˜ 2 q are flavour indices running over the six flavours of up- and down-type quarks. qq m j ( 1 2 ]. Here we only provide the soft-breaking Lagrangian governing the mass terms − sector, and the complex sgluon field is decomposed as and . Since the number of possible squark-(anti)squark combinations is reduced, the 18 i = C plex scalar in thesuperfield. octet The colour gluon, gluino representation. and the It sgluon together is form an the scalar component of the The gluino is abehaves Dirac like the with MSSMa R-charge gluino vector superfield and isantichiral supermultiplet the of the gluon,The contained model in contains a scalar gluon (sgluon) field with R-charge +1 and a “right-handed”type squark cannot ˜ mix,quark/squark in supermultiplets contrast are to describedsuperfields the by chiral MSSM, superfields but flavour mixing is possible. The For each quark flavour 1 The SUSY Lagrangian and Feynman rules of this sector of the MRSSM can be found • • • pairs produced squark and antisquark must have the same chirality while, in processes soft L initiated by figure squark production crossMSSM section for in squarks of theis the MRSSM expected same to is mass. be expected On larger the to due other to be hand, additional gluino polarization smaller production states than cross of in Dirac section gluinos. the sgluons (see e.g. ref. [ 2.2 Tree-level squark productionIn the at MRSSM the all LHC final left/right- states carry with an total R-chargegg of leading to flavour-mixed squarkSU(3) mass eigenstates. the tree-level masses ofstructure components of given the by model,squarks its mass are matrices the and lightest coloured SUSY — significantly lighter than gluinos and where The squark mass matrices can have significant off-diagonal components in flavour space, in ref. [ R-symmetry implies inever, particular Dirac that mass Majorana termseach gaugino are gauge allowed group masses if factor additional are areMRSSM adjoint introduced. forbidden. the chiral list supermultiplets Concerning of for the How- states strongly is interacting as sector follows: of the 2.1 Strongly interacting sector of the MRSSM JHEP09(2019)120 1 ]. – 4 L R 34 and ˜ , ˜ u u (2.2) / / 33 L R ˜ ˜ u u SARAH-4.13.0 . These events are then clustering algorithm [ t . k u u | SARAH summed over all processes: ], which includes the relevant we take the absolute difference 35 [ (NLO) R † R ], the anti- ] for LO event generation of 13 TeV ˜ ˜ u u tot MSSM / / 32 [ σ σ L † L 28 , ˜ ˜ u u − NNLLfast 27 [ pairs to be produced. For simplicity, only one NLLfast † R for both squark as well as gluino final states FastJet ˜ u ], L – 4 – u (NNLL) 31 3 [ ] models generated by tot or ˜ σ L 29 [ ˜ NLLfast u ≡ | L u ]. In line with the ATLAS analysis we make use of the ] to extract the limits for the considered parameter points. Herwig-7.1.2 g g UFO Delphes 36 30 [ [ MSSM σ ∆ R † R ˜ ˜ u u / / ]. We use L † L 26 ˜ ˜ NNLLfast u u – we make use of 19 [ CheckMATE-2.0.26 . Examples of tree-level diagrams for squark pair production in the MRSSM. In contrast CheckMATE from LO to NLO. We do not take the NLL K-factors into account for the direct ]. The MRSSM and MSSM mass spectrum generation is done using We arrive at an estimate of the theory uncertainty of the cross section prediction by First we discuss the inclusion of higher-order corrections for the MSSM as it is straight- Two important points are the inclusion of higher-order corrections and the estimation With 1 18 , u u certainty on the total crossof section the in NLO the to MSSM NNLL ∆ cross sections provided by noting that the NNLLthan corrections the in NLL the corrections.tainties relevant Furthermore, from regions the scale and NNLL are PDF corrections variations. alwaysis are Therefore, substantially always the larger the larger non-inclusion largest than of source NNLL the contributions of uncer- theoretical uncertainty dominating other effects. For the un- to scale the prediction forHerwig the total production cross sectionexclusion appropriately limit as in calculated the by MSSMcomparison as of they both are models notimental available we analysis for consider makes the the MRSSM usepart same and of of theoretical for the our the accuracy. analysis NNLL sake So of of K-factors. the far, theory Therefore, no uncertainty. exper- we only include them as forward with theNLO+NLL use corrections. of Corrections the ofcluded public NNLL in software type the are tool global known NLO for K-factors the provided MSSM by and are in- and MSSM are generated using passed to of remaining theoreticalprocesses, uncertainties. in turn We for now the describe MSSM and our the procedure MRSSM. for all involved signal cross sections, adata. simulation of Much events, of6 and the the technical actual frameworkSPheno-4.0.3 comparison has to been experimental establishedSupersymmetric-QCD in (SQCD) our events previous including works subsequent [ decays. Events for MRSSM (s)quark flavour is shown. 2.3 Calculational details andOur analysis uncertainty amounts estimation to amasses recasting both of in LHC search the results MSSM into and limits the on MRSSM. squark It and requires gluino a precise evaluation of the relevant Figure 1 to the MSSM, R-symmetry forbids ˜ JHEP09(2019)120 ]) 49 . [ (2.3) 2 as an / . 1 ! 2 OneLOop  ]. ) = 10 TeV and 41 aMC@NLO ref O NNLLfast ref O m m = PDFs [ O ] (which uses 2 MadGraph5 , m 48  – ] and no results for higher 1 46 [ MMHT2014 ] using several methods. We ], (NLO 18 ∗ (NLO) 3 ˜ 40 q [ ]. q Ninja +˜ ˜ ], q 43 ˜ q , 45 σ [ MRSSM tot 42 ] as connection to σ [ − LHAPDF6 ) ], 54 Form , ], 39 [ 53 . The theory uncertainty in the MRSSM and 44 [ (NLO) – 5 – up/down O GoSam-2 m MadFKS MSSM Qgraf tot = interface [ σ and NLLfast O 2 (NLO) − ] , m BLHA2 38 , MSSM tot 37 σ [ (NLO (NNLL) . The effect of the sgluon mass as source of uncertainty is not we make use of ∗ ˜ q q +˜ ˜ q ˜ MSSM q tot σ σ  aMC@NLO  ]. We rely on the NNLLfast +

52 we make use of the programs – = = 10 TeV and varying it by a factor of ten for an estimate on the sgluon mass 50 [email protected] [ O corresponds to either 1 or 100 TeV (depending on which one gives the maximum MadGraph5 GoSam m ]. It was found there that a non-decoupling effect exists due the sgluon-gluino mass MRSSM σ 18 Gluino production is of minor importance for the analysis of the MRSSM mass limits, To estimate uncertainty of type (2) we need to estimate unknown higher order cor- The theory uncertainty of the squark/antisquark production cross sections isTo domi- estimate the theory uncertainty of type (1), we note that the influence of the The method used for the inclusion of higher-order corrections and the estimation of Golem95 With With ∆ 2 3 up/down O the MSSM is again approximatedevaluated by using the numerical valuetaken of into the account. MSSM NNLL corrections and since gluinos are likely toorder be significantly corrections heavier are than squarks available.cross [ section Hence, K-factors we byK-factors approximate the are the again MSSM evaluated MRSSM ones using gluino for the production analogues mass spectra. The MSSM In the last line the referencem octet soft breaking mass parametercontribution is to set to the uncertainty) are large — significantlyfrom larger than QCD the threshold NLL productionof ones. effects a As we similar these assume corrections magnitudeapproximation that originate and for largely their the we effects uncertainty may sourcesfollowing in use formula (2). the the for This MRSSM NLO our discussion uncertainty are to estimate can NNLL be K-factor summarized of in the splitting. We take thismass effect of into account independence our of uncertainty the by squark/antisquark assuming production a cross central sections. octet rections in the MRSSM. In the MSSM, it is known that the missing NNLL corrections nated by two sources:corrections, (1) (2) the the unknown unknown NLL masses and of NNLL sgluons, corrections. whichsgluon impact mass the on size the of MRSSMref. loop [ cross sections due to higher order effects has been studied in remaining theoretical uncertainties needsseveral to relevant effects be arecesses adapted in not when the as going MRSSM well havetake to been into known. the account computed these MRSSM at The NLO NLOMadGraph5 as corrections in squark/antisquark via ref. production global [ K-factors, pro- evaluated numerically using JHEP09(2019)120 4 ]. 57 , 56 ] are available 18 , flavour mixing is zero ˜ . q m . We assume that K-factors θ 4 third gen. K · ) ] and the search for stops [ θ and the work in ref. [ 4 55 sin − – 6 – drops out when all masses are equal. Then only NLLfast θ + (1 first gen. for the MSSM as well as our work for the MRSSM and use K · θ 4 is allowed (assuming that quark masses can be neglected against sin θ NLLfast includes ATLAS analyses, which are sensitive to the final states of these includes additional experimental analyses and we have checked that the ones we list are the no flavour mixing no flavour mixing, L/R states mass degenerate no flavour mixing, independent masses of L/Rstop-squark states mixing, equal in L/R sectors CheckMATE A special scenario we study in this work is the squark/antisquark production for the CheckMATE • • • 4 We begin with aand simple second but generation still particularly squarks interesting are scenario. set to All amost masses sensitive. of common the value first of Unless specified otherwise, thewhich squarks is assumed are to assumed beeter to massless. space. decay This into will a provide the quark most and stringent3.1 the limit on LSP, the Scenario param- A: squarks of the first and second generation degenerate in mass, exclusions to the case of the MSSM. We distinguish three scenarios: to six jets plus missing transverse energy search [ 3 Squark mass limitsIn in this the section MRSSM we present the limits on squark masses in the MRSSM and compare the The case of non-degeneratemixing. squark We assume masses that is onlythe handled the one lowest mass the considered parameter same squark needed way mass for as is the relevant the available and tools. processes. one take it without The as relevant ones, on which we will focus in the following section, are the two the quark-initiated cross sectionfor shows a the dependency first of generationmultiply sin and the third total generation leading are order of cross similar section by size, a not factor too of far from one and the smaller of thefor two estimation squark of masses the considered uncertainty. Whengeneration as additionally via squark the an mass mixing angle between input. thethe first The degenerate and same third soft-breaking is squark done corrections mass of requires one further generation) consideration.flavour the diagonal inclusion and The of the higher dependence gluon-initiated order on production of squarks is special cases of non-degenerate squarksquarks. masses and As mixing the betweenfor 1st higher squarks and order with 3rd results degenerated generation approximated. of masses For and the zero case mixingK-factors of provided non-degenerated the by masses relevant and K-factors zero can mixing only we be use the global JHEP09(2019)120 (3.1) become relevant. ˜ g q pairs is less relevant production is allowed † ˜ q 5 TeV, where gluino fi- † R shows that the resulting and ˜ ˜ q q 3. ¯ ˜ 2 g R q g > and ˜ ˜ g † m and ˜ ˜ q q = 5 TeV) L ˜ ˜ g q L m q ( –7– . Production of ˜ ˜ q q is allowed and the production process is therefore sup- shows the exclusion contours in the squark-gluino mass 7 TeV (MRSSM) 3 TeV (MSSM) 2 R 1. 2. ˜ q L q due to the chiral structure of the quark-squark-gluino coupling > ˜ g ˜ q m m . Mass limits on squarks and gluinos in case of degenerate 1st and 2nd generation squarks. For lighter gluino masses, further production processes of ˜ In the MRSSM only the ˜ We first focus on the region with very heavy gluino, This is one ofence the in central results limit of isthe the the MSSM. present reduced paper. squark The production reason cross for section the in 600 GeV theIn differ- MRSSM particular compared pure to gluino productionsimply because is the enhanced gluino in has the 4 MRSSM instead compared of to 2 the degrees MSSM, of freedom. For this reason, the LHC because antisquark productiontherefore requires suppressed antiquarks by antiquark or PDFs or, in in the the case initial of heavy state squarks, and gluon PDFs. is and the gluino mass suppression is weaker. Accordingly, figure MRSSM squark mass limits arewe substantially weaker. obtain the For a following reference limits gluino mass of 5 TeV, The limits are based on auncertainty recasting of of the LHC analyses, cross and sections the (see marked bands discussion correspond in to section the theory 2.3). and the LSP is massless.plane for Figure the MRSSM and the MSSM. Figure 2 and Dirac nature of the gluino. In the MSSM, also ˜ nal states are irrelevant.because This supersoft parameter supersymmetry region breaking isgaugino naturally particularly and allows for motivated scalar in a masses. smallcesses the In hierarchy are MRSSM this between the parameter pure region squark final the states most important ˜ production pro- pressed by two powers of JHEP09(2019)120 1]. 57] (3.2) (3.3) 56, . In this case the R ˜ q shows the resulting m 3  L ˜ q m = 5 TeV) and one common right-handed ˜ g L m ˜ q = 5 TeV) ˜ q = m m R ( ˜ q m ( . In the MRSSM, only the second one is † L ˜ q L q –8– and ˜ L ˜ q 2 TeV (MRSSM) 0 TeV (MSSM) L q 2. 2. 3 TeV (MRSSM) 8 TeV (MSSM) mass plane. The exclusion is symmetric under the exchange 1. 1. R q > –˜ ˜ g L > q m L ˜ q m for the first and second generation squarks. The gluino is assumed = 5 TeV) and the LSP to be massless. Figure R ˜ g ˜ q m m ; hence we focus our discussion only on the case R ˜ q . Mass limits on left-/right-squark masses (assuming universality among generations) for m flavour mixing ↔ = 5 TeV. L ˜ q ˜ g to be heavy ( 3.2 Scenario B: mass splittingNow between we assume left- one and common left-handed right-handed squark mass squarks, no allowed but it isweak. PDF-suppressed; In the hence MSSM the botha final reference, limit states for on are gluino allowed, the and and right-squark lighter the masses mass squark of limit mass 5 is TeV, much we is stronger. obtain rather As as limits exclusion contour in the ˜ reach for light gluinos is higher in the MRSSM. The appropriate limits are Figure 3 m Similar to eq. 3.1 the squark mass3.3 limits are about 500 Scenario GeV C: lowerIn in flavour mixing the the MRSSM. between MRSSM, firstFlavour flavour and mixing mixing can third modify generation between the limitssensitivity the on to squarks squark squarks masses is of since LHCMSSM, the particularly searches first the have well a or limits different motivated second on [ generation stop and masses to alone stops and from sbottoms. the dedicated In the ATLAS stop search [ most important final states are ˜ squark mass m JHEP09(2019)120 (3.4) 5 TeV, . 85 TeV, . =3 =1 ). F ˜ q stop/sbottom F ˜ q 3.4 m m ≡ 5 TeV. V . q 1 see eq. ( ˜ q = 5 TeV. The varying 1 ˜ (b) F 13 ˜ q ˜ g q θ 13 for the case m θ V and ˜ q ˜ + cos V m q 3 + sin ˜ q are related to the ones of the first 3 is purely stop-like, and accordingly the stop content goes down and the ˜ 13 q θ F V 13 13 q q θ θ sin 2) corresponds to ˜ − π/ –9– = 13 θ = 0 squark ˜ 13 13 θ θ = 0( shows the exclusion limit dependence on the mixing angle. 4 13 θ (lighter squark type) = cos (heavier squark type) = and fixed squark mass state V F ˜ q (a) ˜ q V 1 TeV. We found that generic squark searches would lead to a limit q 1. shows the limits on the lighter squark mass for the case shows the limits on the lighter squark mass > ˜ t m 4(b) 4(a) . Mass limits on squarks in case of flavour mixing between 1st and 3rd generation (as- sup/sdown). Figure Figure Figure In the following we investigate the impact of flavour mixing on squark mass limits in the ≡ V q squark mass state stop-search limit becomes weaker while the 2–6 jet limit goes up to 1 suming left-right universality). For details on the definition of amount to Figure 4 which is almost equally strongthe while MRSSM. limits on stops are essentially equal in the MSSMMRSSM. and We focus on a simplemixing case exhibiting in a particularly the strong left- effect.As and We assume before right-handed equal the sectors LSP between first- remains and massless third-generation and squarks. the gluino mass is both kind of limits are around 1.2 TeV. For higher and third generation via a mixing angle With this assignment just slightly heavier than thesaturates lighter squark. the In limit this caselighter from the squark heavier generic squark production squark already easily almost searches violates discussed the above. bounds from For generic this squark reason, searches the limit, which is an interesting valuethe between limit the on light the squarkthe lighter and squark pure the clearly first gluino interpolates generation masses. cases. between In the For this pure case third generation and (˜ JHEP09(2019)120 2. but is 4(a) )). The second result of 3.3 ) and ( 3.1 where we plot squark masses in both models 5 – 10 – . Contours in the MSSM squark mass vs. the MRSSM squark mass plane for masses for These large differences between the mass limits found in the MRSSM and the MSSM R-symmetry is the basis fordard an Model, exciting alternative motivated tonatural by the explanation the Minimal of Supersymmetric suppression the Stan- ing of non-observation feature unwanted of is flavour-violating gluinos. the processesthis weakening As work of and we it the considered turns exclusion 3of out, limits distinct, light phenomenologically on its well first the other motivated and pair appeal- scenarios.“left”- second production and The generation of “right”-handed case squarks. squarks) squarks and (withOur In the first and case main without of result mixing mass issally between degeneracy that stops weaker the between and than squark up corresponding mass squarks. mass limits MSSM limit coming ones. on from LHC squarks Specifically searches if we are gluinos find univer- are an heavy 500–600 (see GeV eqs. lower ( which cross sections for 1st and 2nd generation squark production areand equal the in limit both on models. theslightly lighter stronger squark and mass goes behaves up similarly to to 1.7 the TeV. case of figure 4 Conclusions and outlook the present paper isa that further flavour dramatic mixing reduction between ofangle 1st limits. the and combination The 3rd of reason generation generic is does squark that not searches independently lead and of stop to flavourare searches mixing leads mostly to due similar to limits. lower the in the basic MRSSM. fact Thisfor that is the which seen the squark in production squark figure gluino production cross this section cross confirms is sectionsSubtleties significantly the in such both 500–600 GeV as models differencesignificant model-dependent are role. in the analysis Therefore same. squark efficiencies our results massfuture and For LHC are heavy limit data, acceptances rather if robust. seen do there It is in not no can discovery, figure be play the expected mass a limits that will even go with up in both models, but the Figure 5 JHEP09(2019)120 ] JHEP (2012) , 04 ]. ]. JHEP , ]. SPIRE arXiv:1902.06650 SPIRE IN [ IN ][ ][ SPIRE ]. IN ][ ]. SPIRE (2019) 082 Two-loop correction to the Higgs Exploring the Higgs sector of the IN mass and electroweak (2015) 760729 SPIRE ][ 08 IN Flavour models with Dirac and fake [ Low-energy lepton physics in the 2015 JHEP arXiv:1511.09334 arXiv:1410.4791 , [ [ arXiv:0712.2039 How many ? [ ]. (1975) 104 is expected to be able to exclude MSSM squark – 11 – arXiv:1312.2011 Flavor in supersymmetry with an extended 1 conversion (2016) 007 [ (2014) 124 SPIRE B 90 − e IN 03 12 ][ → ]. µ (2008) 055010 ]. ), which permits any use, distribution and reproduction in Precise prediction for the W boson mass in the MRSSM Adv. High Energy Phys. JHEP JHEP (2014) 632 and , , , SPIRE Nucl. Phys. D 78 IN , eγ ]; according to our results this translates into an expected limit SPIRE ][ IN → 58 B 884 ][ µ , CC-BY 4.0 µ arXiv:1904.03634 2) This article is distributed under the terms of the Creative Commons [ Phys. Rev. − , 3.5 TeV [ g ( ∼ Supergauge invariant extension of the Higgs mechanism and a model for the ]. Nucl. Phys. , 3 TeV in the MRSSM (assuming gluino has a mass of 4.5 TeV). On the other arXiv:1111.4322 ∼ [ (2019) 011 SPIRE IN arXiv:1504.05386 043 MRSSM: [ [ MRSSM with a light scalar 07 gluinos observables in the MRSSM boson mass in the MRSSM R-symmetry and its In deriving those conclusions, we have applied available higher order SQCD corrections W. Kotlarski, D. and St¨ockinger H. St¨ockinger-Kim, M. Heikinheimo, M. Kellerstein and V. Sanz, P. Diessner, J. Kalinowski, W. Kotlarski and D. St¨ockinger, P. Diessner and G. Weiglein, E. Dudas, M. Goodsell, L. Heurtier and P. Tziveloglou, P. Dießner, J. Kalinowski, W. Kotlarski and D. St¨ockinger, P. Diessner, J. Kalinowski, W. Kotlarski and D. St¨ockinger, G.D. Kribs, E. Poppitz and N. Weiner, P. Fayet, [8] [9] [6] [7] [3] [4] [5] [1] [2] Open Access. Attribution License ( any medium, provided the original author(s) and source areReferences credited. Acknowledgments This research was supportedgrants in number part STO by 876/4-1Harmonia the grant and German under STO Research contract 876/2-2 UMO-2015/18/M/ST2/00518 Foundation (2016–2019). (DFG) and under the Polish National Science Centre to squark pair productionavailable, and estimated for them the using remaining MSSMical results. processes uncertainty, showing where We that also such ourspecific, estimated correction conclusion NLO+NNLL the are should corrections remaining not remain become theoret- valid available. even once full, MRSSM with an integrated luminosity ofmasses 3000 fb up to of only hand the pure gluinogluino mass degrees limits of are freedom stronger in in the the MRSSM. MRSSM as there are twice as many gap between the limits will remain. For example, the high-luminosity phase of the LHC JHEP09(2019)120 ] ]. , 183 ]. B 672 SPIRE (2012) (2009) Comput. 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