PoS(CORFU2017)002 http://pos.sissa.it/ on behalf of the MoEDAL Collaboration ∗ [email protected] Speaker. The MoEDAL experiment at themagnetic monopoles, LHC dyons is and (multiply) optimised electrically to chargedin stable detect massive a particles highly number predicted ionising of particles theoreticalsive scenarios. such nuclear track as MoEDAL, detectors with deployed magnetic inbackgrounds monopole the are trapping LHCb volumes, being while cavern, monitored spallation-product combines withcept pas- an and array its physics of reach MediPix willThe pixel be potential detectors. presented. to search Emphasis The for will heavy, detector long-lived bediscussed. supersymmetric con- given electrically-charged to particles recent is also MoEDAL results. ∗ Copyright owned by the author(s) under the terms of the Creative Commons c Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). Corfu Summer Institute 2017 ’School and2-28 Workshops September on 2017 Elementary andCorfu, Gravity’ Greece Vasiliki A. Mitsou Searches for New Physics with thedetector MoEDAL at the LHC Instituto de Física Corpuscular (IFIC), CSICParc Científic – de Universitat la de U.V., València, C/ CatedráticoE-46980 José Paterna Beltrán (Valencia), Spain 2, E-mail: PoS(CORFU2017)002 4 R

and Lexan R

Vasiliki A. Mitsou , whilst Section 3 A three-dimensional ]. Emphasis is given 6 [ experiment at the Large th , Makrofol R

]. The most important motiva- 4 is dedicated to supersymmetric ], the 7 5 2 Figure 1: schematic view of thetector MoEDAL around de- the LHCb VELO region at Point 8 of the LHC. , 1 provides a brief description of the MoEDAL ] cavern. A three-dimensional depiction of 2 7 MoEDAL Physics Review 1 . It is a unique and largely passive LHC detector 1 ] is deployed around the intersection region at Point 8 of the LHC 2 ], is designed to search for manifestations of new physics through highly- 3 ] with single or multiple electric charges that arise in various scenarios of 5 . 6 The main sub-detector system is made of a large array of CR39 The MoEDAL detector [ MoEDAL (Monopole and Exotics Detector at the LHC) [ The structure of this paper is as follows. Section the MoEDAL experiment is presentedcomprised in of Fig. four sub-detector systems. 2.1 Low-threshold nuclear track detectors 2. The MoEDAL detector in the LHCb experiment Vertex Locator (VELO) [ Hadron Collider (LHC) [ nuclear track detector (NTD) stacksionising surrounding particle the through intersection the area. plastic The detector passage is of marked a by highly- an invisible damage zone along the physics beyond the Standard Modeldiscovery (SM). potential, For an the extended reader and is detailed referred account to of the the MoEDAL presents the MoEDAL results on monopole searches. Section detector. Magnetic monopoles and monopolia are briefly discussed in Section The MoEDAL experiment at LHC 1. Introduction ionising particles in a manner complementary totion ATLAS and for CMS the [ MoEDAL experiment is toenergies. pursue the In quest for addition magnetic the monopolesslow-moving experiment and particle dyons is [ at designed LHC to search for any massive, stable or long-lived, here on recent MoEDAL results,to based 7-TeV on and 8-TeV the -proton exposure collisions. of trapping volumes models predicting massive (meta)stable states. The paperin concludes with Section a summary and an outlook PoS(CORFU2017)002 c / v = β particle. This Vasiliki A. Mitsou The VHCC between stopped is the charge and Z Figure 3: RICH1 and TT installed for Run 2. 5, where . This is the closest possible location to 2 ∼ β / Z 1 cm. The part of the Run-2 NTD deployment 2 ∼ in an aluminium foil envelope, is deployed in the R

electrically or magnetically charged particle that will . It is the only NTD (partly) covering the forward region, adding penetrating 3 50): the Very High Charge Catcher (VHCC). The VHCC sub-detector, consisting ∼ Part of the Run 2 NTD deployment on top of the 5% to the LHCb material budget while enhancing considerably the overall geometrical β . / 0 Z ∼ A unique feature of the MoEDAL detector is the use of paramagnetic magnetic monopole Another new feature of the Run-2 deployment is the installation of a high-threshold NTD trappers (MMTs) to capture electrically- and magnetically-charged highly-ionising particles. Such only coverage of MoEDAL NTDs. 2.3 Magnetic trappers array ( of two flexible low-mass stacks of Makrofol 2.2 Very high-charge catcher Figure 2: LHCb VELO. the interaction point and represents aRun novelty 1. of this run with respect to earlier installations during forward acceptance of the LHCbTracker experiment (TT), between as the shown LHCb in RICH1 Fig. detector and the Trigger The MoEDAL experiment at LHC trajectory. The damage zonechemically etched. is Then revealed the sheets as ofsheets. a plastics are cone-shaped The scanned etch-pit looking MoEDAL for when NTDs alignedthe the etch have velocity pits a of plastic in the threshold detector multiple incident of is particles particle. that In are proton-proton highly ionising collision enough running, towith the leave range a only that track is source in typically of MoEDAL much known NTDsthe less are than ionising spallation the signature products thickness will of be one that sheet of of the a NTD very stack. low-energy electrically-charged In that case signature is distinct to thatusually of traverse a every sheet in aback MoEDAL to NTD the stack, collision accurately point demarcating with a a track resolution that of points which rests on top of the LHCb VELO is visible in Fig. PoS(CORFU2017)002 . Each pixel 5 Vasiliki A. Mitsou . The aluminium 4 for a total mass of 3 5 cm . 2 × 5 . 2 × Run 2 deployment of TimePix chips in m) distributed throughout the MoEDAL µ Figure 5: MoEDAL. 3 ]. The search for the decays of long-lived electrically 9 , 8 ]. 10 in 2012. For the 2015 run at 13 TeV, the MMT was upgraded to an array 1 . − 4 256 square pixels with a pitch of 55 × Deployment of the MMT for the LHC The only non-passive MoEDAL sub-detector system comprises an array of TimePix pixel A trapping detector prototype was exposed to 8 TeV proton-proton collisions for an integrated cavern at IP8, formingbackgrounds. a A real-time photo of radiation its monitoring readout system setup for of the highly-ionising 2015 installations beam-related is shown in Fig. device arrays (256 Figure 4: Run 2. 2.4 TimePix radiation monitors luminosity of 0.75 fb absorbers of MMTs are subjectmote to SQUID an magnetometer analysis facility lookingcharged for [ particles magnetically-charged particles that at are a stoppedremote re- underground in facility. the trapping detectors will subsequently be carried out at a consisting of 672 square aluminium rods with dimension 19 of the innovative TimePix chip comprises a preamplifier,synchronisation a logic discriminator and with threshold a adjustment, 14-bit counter.allows The a operation of 3D TimePix mapping in time-over-thresholdthus of mode differentiating the between charge different spreadingmeasuring types effect their of in energy deposition particles the [ species whole from volume mixed of radiation the fields silicon and sensor, The MoEDAL experiment at LHC volumes installed in IP8 for the 2015 proton-proton collisions is shown in Fig. 222 kg in 14 stacked boxesbeam that pipe were on placed the 1.62 side mpresented opposite from in to the Section the IP8 LHCb LHC detector. interaction point The under results the for the Run-2 configuration are PoS(CORFU2017)002 . ], ) 2 18 / ]. (3.1) e – 27 , 16 137 ( 26 ], the LHC β 31 ]. Dirac showed Vasiliki A. Mitsou 11 ) that of a minimum- 2 5 . ], which however would 30 , 29 ], electroweak monopoles [ 700 times (68 , 15 ,..., , ]. Magnetic monopoles that carry a non- 2 , 13 25 1 – = 23 is the fine structure constant (at zero energy, as ) has an equivalent electric charge of N , is the monopole magnetic charge. In Dirac’s for- D 4 1 g g 12 137 , e exiting the LHC beam vacuum chamber at locations = 2 N 0 ε = 2 pX p ¯ hc e ), establishing the value of their magnetic charge. Although g π 4 α → 3.1 = pp α ] in order to optimise its potential to discover these messengers of 14 – ] and monopolium [ 11 22 ] being confined by strong magnetic forces. Monopolium is a neutral state, – 28 ] that monopoles are not seen freely because they form a bound state called , 19 23 25 , , is the vacuum permittivity, and ]: (light) ’t Hooft-Polyakov monopoles [ 12 24 0 [ 6 , ε 11 is the electron charge, e The high ionisation of slow-moving magnetic monopoles and dyons, implies quite characteris- A possible explanation for the lack of experimental confirmation of monopoles is Dirac’s The MoEDAL detector is designed to fully exploit the energy-loss mechanisms of magneti- The theoretical motivation behind the introduction of magnetic monopoles is the symmetrisa- tic trajectories when such particles interact with the MoEDAL NTDs, which can be revealed during not be visible in the MoEDALradiation detector. detector Nevertheless according systems to can a beby novel used proposal detecting [ to final-state turn thedetermined LHC by itself their into fractional momentum a losses. newmonopolia. Such physics technique search would be machine appealing for detecting 4. Searches for monopoles in MoEDAL hence it is difficultwould to give detect a rather directly clear at signal for a the collider ATLAS and detector, CMS detectors although [ its decay into two photons monopolium proposal [ global monopoles [ monopoles symmetrise Maxwell equations inthe form, DQC, namely there that is the a basic magneticmagnetic numerical monopole charge asymmetry is with a much arising single larger from Dirac than charge theThus ( smallest for electric a charge. relativistic A monopole theionising energy electrically-charged loss particle. is The around monopole 4 mass remains a free parameter of the theory. appropriate to the factmonopole), that the DQC pertains to long (infrared) distances from the centre of the cally charged particles [ tion of the Maxwell equations and the explanation of the charge quantisation [ The MoEDAL experiment at LHC 3. Magnetic monopoles new physics. There are various theoreticalat scenarios the in LHC which magnetic [ charge would be produced zero magnetic charge and dyons possessingfascinating both hypothetical magnetic particles. and Even electric though chargedence are there for among is their the no existence, most generally there acknowledged areare empirical strong predicted evi- theoretical by reasons many to theories believe including that grand they unified do theories exist, and and superstring they theory [ that the mere existence ofnature of a the monopole electric in charge, leading the to universe the could Dirac Quantisation offer Condition an (DQC), explanation of the discrete where mulation, magnetic monopoles are assumed to existconsistency as conditions point-like lead particles and to quantum Eq. mechanical ( PoS(CORFU2017)002 ]. D g 33 was 4 with . The D D D g | ≤ g g 5 g 6 . ≤ | | ≤ D ], as shown in g g 33 Vasiliki A. Mitsou ≤ | D g Al nuclei of the aluminium at 13 TeV [ 27 13 D g 5 | ≤ g when compared to higher charges are ≤ | 6 D g )) implies a strong magnetic dipole moment, 3.1 5 ]. Eq. ( 34 cf. ( e 5 . displayed in Fig. 68 D g = = D g | g | and spin-0 monopoles for 1 2 / ]. In addition, the high magnetic charge of a monopole (which is expected 1 ]. Model-dependent cross-section limits are obtained for Drell-Yan (DY) 6 , 32 2 (left) and for spin-0 monopoles (right). The various line styles correspond to different ]. MoEDAL has extended these bounds including the 2016 MMT exposure, also 2 / 1 35 Cross-section upper limits at 95% confidence level for DY monopole production as a function . Caution, however, should be exerted here in the sense that the non-perturbative nature of 6 Under the assumption of Drell-Yan cross sections, mass limits are derived for 1 The weaker limits for In the context of the MMT exposure during Run 2, no magnetic charge exceeding 0 Figure 6: of mass for spin- monopole charges. The solid lines represent DY cross-section calculations at leading order. From Ref. [ the 8-TeV analysis [ mostly due to losshigher of charges, acceptance monopoles from ranging monopoles outtance before for punching DY reaching through monopoles the with the trapping increasingspin trapping charge volume dependence and volume. decrease is reaches the solely below For accep- 0.1% duemonopoles for to for a the spin charge different 0. of event 6 kinematics: more central and more energetic MMTs. In such a case, thebe presence detected of through a the monopole existence trapped of inrents a an in persistent aluminium the current, bar of defined SQUID an as of MMT the acoil. would difference magnetometer between before the and cur- after the passage of the bar throughdetected the sensing in any ofallowing the limits exposed to samples be whenhave placed been passed obtained on through in fiducial monopole the regions production. of ETH monopole Zurich energy Model-independent and SQUID direction cross-section facility, for limits 1 setting the first limits for spin-1 monopoles [ the large magnetic Dirac chargeDrell-Yan calculations of of the the monopole pertinent invalidateonly any cross indicative, perturbative due sections treatment to and the based henceresolved lack on any if of thermal result any production in based other heavy-ion concrete on collisionsis —that theoretical the does considered treatment. latter not [ rely This is on situation perturbation theory— may be which in turn may result in a strong binding of the monopole with the pair production of spin- to be at least one Dirac charge The MoEDAL experiment at LHC the etching process [ Fig. PoS(CORFU2017)002 ] are before 33 ], while ) 27 1m ( (a mixture of O 0 ], which placed 1 Vasiliki A. Mitsou ˜ χ 37 , parity is conserved. ]. R 36 38 1, potentially detectable ± ]. Possible weakly-interacting ). The ATLAS bounds are better 39 7 (top) and spin-0 (bottom) monopoles. 2 / ] and 13 TeV (red, dark grey) [ 1 2) . . Fig. 32 0 . c.f. ]. ( β 37 D g 5 . 1 6 . ˜ G | ≤ g | due to the higher luminosity delivered in ATLAS and the D g 1 = | g | ) and the gravitino 5, then they may be detected in the MoEDAL NTDs. No highly-charged γ & β and / Z H , Z Excluded monopole masses for DY production for spin- Supersymmetry (SUSY) is an extension of the Standard Model which assigns to each SM The lightest supersymmetric particle (LSP) is stable in models where spartners of the The MoEDAL results obtained at 8 TeV (yellow, light grey) [ neutral candidates in the Minimal Supersymmetric Standardwhich Model has (MSSM) include been the sneutrino, excluded by LEP and direct searches, the lightest neutralino field a superpartner fieldto with several a open spin issues differing inthe by the grand a SM, unification. such half as unit. SUSYcharged the scenarios particles. hierarchy SUSY propose problem, If provides a the they elegant number identity are of solutions of sufficiently massive dark long-lived slowly to matter, moving and travel electrically a distance of at least 5. Electrically-charged long-lived particles in supersymmetry particles are expected inmay such yield a massive, theory, long-lived particles but that there could are have electric several charges scenarios in which supersymmetry loss of acceptance in MoEDAL fordifficult small to magnetic charges. be On probed the inlevel-1 other trigger ATLAS hand, due deployed higher charges to for are the suchcross limitations searches. sections of set A the by comparison electromagnetic-calorimeter-based othergeneral of limits colliders the including with searches limits those in on cosmic set monopole radiation by are production MoEDAL reviewed in is Ref. presented [ in Ref. [ Figure 7: superimposed on the ATLAS 8-TeV limits (hatched area) [ decaying and their in MoEDAL if they are produced with low velocities ( The MoEDAL experiment at LHC at the LHC, complementing previouslimits for results monopoles from with ATLAS magnetic Collaboration charge that [ the MoEDAL ones for The LSP should haveconventional no matter and strong be or detectable in electromagnetic anomalous heavy interactions, nuclei [ for otherwise it would bind to PoS(CORFU2017)002 0, 6= (5.1) 00 ]. For a λ is small. 40 0 or 1 is violated, ˜ χ 0 R λ m − Vasiliki A. Mitsou 1 ˜ τ decays [ m `` neutralino dark mat- , H → i ˜ ` L i µ and + , is severely restricted by lower k ` 00 , whereas the bilinear couplings ¯ q E λ j `` L → i → L and q ˜ ` i jk λ λ , or generation indices. The simultaneous pres- + ` k k q , ¯ , since there is no exact local symmetry asso- j D j or , i ¯ Q could be violated in such a way that q ), namely i 7 ¯ q L ], which could be long lived if B 5.1 0 i jk → 41 [ λ q 1 + ˜ τ and/or -parity violation k ¯ R D L j ¯ D may not be exact i exact, the NLSP may be long lived. This would occur, for ex- 0, the prospective experimental signature would be similar to a ¯ U is 6= 00 i jk , and any charged state could again be detectable as a massive slowly- λ λ parity denote chiral superfields corresponding to quark doublets, antiquarks, = R 1 TeV, the lifetime for such decays would exceed a few nanoseconds for i parity , and hence no fundamental reason why they should be conserved. One ¯ E ∼ B RV R W or and R-hadrons L i L . ]. , 8 i − ¯ 42 D , i 10 ¯ ) generate Higgs-slepton mixing and thereby also ˜ U , < parity is broken, the LSP would be unstable, and might be charged and/or coloured. In the i ) generate sparticle decays such as ˜ 00 5.1 Q R λ , 5.1 Several scenarios featuring metastable charged sparticles might be detectable in MoEDAL. If However, even if 0 scenarios based on the constrained MSSM (CMSSM), for instance, the most natural candidate λ , There are several regions of theimposed CMSSM by parameter unsuccessful space searches that for sparticles aremass. at compatible the These with LHC, include the as a constraints well strip asdown in the the into discovered focus-point Higgs the region boson range where thea allowed relic region by density where cosmology of the the because LSP relicHiggs of is density resonances, its brought and is relatively a controlled strip large by where Higgsinodegenerate the rapid staus component, relic and annihilation other LSP through sleptons. density It direct-channel is wasare reduced heavy found favoured by in [ coannihilations a with global analysis near- that the two latter possibilities moving charged particle. If stau next-to-lightest sparticle (NLSP) case to be discussed later. On the other hand, if One such scenario is that former case, it might be detectablecle. directly In at the the latter LHC case, asstates, a the the so-called massive LSP slowly-moving would charged bind parti- with light quarks and/or gluons to make colour-singlet The MoEDAL experiment at LHC 5.1 Supersymmetric scenarios with limits on the proton lifetime,Eq. but ( other combinations are lessin restricted. Eq. The ( trilinear couplings in nominal sparticle mass λ the prospective experimental signature wouldbility be of similar charge-changing to interactions a while stop passingcharged through NLSP particle, matter. case, created This yielding could whilst the yieldthat possi- passing a would through metastable be detected the by material MoEDAL. surrounding the intersection point, 5.2 Metastable lepton NLSP in the CMSSM with a neutralino LSP ter for the NLSP is the lighter stau slepton lepton doublets and antileptons, respectively, with ciated with either could consider various ways in which ence of terms of the first and third type in Eq. ( ample, if the LSP isLSP the is gravitino, or small, if offering the more mass scenarios difference for between long-lived the charged NLSP sparticles. and the In neutralino as represented by the following superpotential terms: where PoS(CORFU2017)002 ]. 49 (5.3) (5.2) (gluinoball) is the LSP, the Vasiliki A. Mitsou ˜ ]. G 48 160 MeV are expected lifetime is calculated to ]. combinations. The heav- 1 > ˜ τ 0 44 : indeed, this is required at 1 ˜ χ τ , m m , 43 4 − . # 1 s ˜ ˜ is expected to be the lightest slep- τ ˜ 2 2 ` G 5 1 m m ]. If the gravitino ˜ M τ  2 GeV, the . qqq (baryino) 46 − 1 [ ˜ g 1 1 < " ˜ m t 0 ˜ ˜ 1 1 TeV 2 5 ` G ˜ χ m  M m 4 2 ∗  − 8 M scenarios with more general options for the pattern 1 ˜ 1 τ π m s GeV 48 is much larger than the electroweak scale, the NLSP m 9 ∗ . If 10 ) = M `  νρ ˜ 0 G 1 8 ˜ χ ≈ ]. Large part of the parameter space potentially attractive for combinations and gluino- → ), and it is possible that this metastable gluino hadron could be or ˜ τ ` 47 ( 5.3 Γ νπ 0 1 ˜ ], or the lighter stop squark 100 ns, that it is likely to escape the detector before decaying, and hence χ gravitino dark matter mass difference may well be smaller than , whilst the supersymmetric partners of SM bosons are relatively light [ 45 0 ∼ 1 ¯ s q (mesino) ˜ χ q m − 1 ˜ τ is the Planck scale. Since ∗ ], and the M 41 In the same way as stop hadrons, gluino hadrons may flip charge through conventional strong Gravitino (or axino) LSP with a long-lived charged stau may arise in gauge mediation and The above discussion has been in the context of the CMSSM and similar scenarios where all In the coannihilation region of the CMSSM, the lighter On the other hand, in to be into three particles: be so long, in excess of would be detectable as a massive, slowly-moving charged particle [ interactions as they pass through matter, andventional it LHC is tracking possible that detector one undetected maycharged in pass state through a that most neutral could of be state a detected con- before by converting MoEDAL. into a metastable large LSP masses. In this case, the dominant stau decays for In such a case, the gluinobut could would have have a a mass very in long the lifetime: TeV range and hence be accessible to the LHC, Long-lived gluinos would form long-livedcombinations, gluino gluino- R-hadrons including gluino-gluon ier gluino hadrons would be expected towith decay into a the lifetime lightest species, given which by wouldcharged. be Eq. metastable, ( minimal supergravity models [ lifetime is naturally very long. the supersymmetric partners of Standardscenario Model is particles “split have supersymmetry”, masses in which invery the the heavy, of supersymmetric TeV a partners range. scale of quarks Another and leptons are where long-lived slepton searches with MoEDALdark-matter abundance are in compatible superweakly interacting with massive cosmological particle constraints scenarios [ on the 5.4 Long-lived gluinos in split supersymmetry The MoEDAL experiment at LHC ton [ 5.3 Metastable sleptons in gravitino LSP scenarios decay rate of a slepton NLSP is given by of supersymmetry breaking, other options appearsmuon, quite or naturally, including a the sneutrino lighter [ selectron or PoS(CORFU2017)002 ]. 52 , 6 Vasiliki A. Mitsou 2. If the selection . 0 . ], and the corresponding β 32 in material that they may decay ]. The first physics results, pertaining to (trapped) 2 ], quirks, strangelets, Q-balls, etc [ ]. The MoEDAL Collaboration is preparing 51 33 9 2, while MoEDAL is sensitive to lower ones . 0 threshold of NTDs. In general ATLAS and CMS have demonstrated to & β / β Z ]. Furthermore it combines different detector technologies: plastic nuclear track ]. 4 50 MoEDAL is optimised to probe precisely all such long lived states, unlike the other LHC MoEDAL is going to extend considerably the LHC reach in the search for (meta)stable highly When discussing the detection of particles stopped There are several considerations supporting the complementary aspects of MoEDAL w.r.t. Therefore the efficiency may lower and the probed parameter space may be reduced in AT- new analyses with more Run 2pretations data, involving with not other only magnetic detectors but (NTDs) also and electric with charges. a large variety of inter- experiments [ detectors (NTDs), trapping volumes and pixel sensors [ Such particles may be light enough toscribed be searches producible for at monopoles the and LHC have energies.in discussed some In the this SUSY moEDAL paper models. relevance we for have long-lived de- partners analysis at 13 TeV have already been published [ ionising particles. The latter are predictedmonopoles, in SUSY a variety long-lived of spartners, theoretical models D-matter and [ include: magnetic magnetic monopole trapping detectors, obtained with LHC Run 1 data [ 6. Summary and outlook later, different possibilities are explored. CMScays of and trapped ATLAS look particles in into jets. emptylaboratory bunch MoEDAL MMTs for crossings may for tracks be de- arising monitored in fromcosmic a rays, such underground/basement should decays. be easier Thethe to background unlimited control in monitoring and time. the assess. latter The case, probed coming lifetimes from should be larger due to cover high-velocities ATLAS and CMS when discussing theparticles. observability Most of of (meta-)stable them massive stem electrically-charged fromdetectors. MoEDAL being Therefore “time-agnostic” signal due to from theseveral very consecutive passive slowly nature bunch of crossings. moving its particles In addition, willyses ATLAS not relying and be CMS either perform lost on triggered-based triggering dueor anal- on to by accompanying arriving developing “objects”, in and e.g. deploying missingadditional specialised transverse cuts triggers. momentum, to The reject offlineparticles. cosmic-ray selection muons may and/or require enhance imposing the reconstruction of highly-ionising LAS and CMS. MoEDAL, on theat other Point 8, hand, by is the mainly geometrical limited acceptancement of by of the the detectors, passing lower especially luminosity the the devivered MMTs, and by the require- The MoEDAL experiment at LHC 5.5 MoEDAL complementarity to ATLAS and CMS criteria imposed by ATLAS and MoEDALunnecessary when for searching MoEDAL for are long-lived SUSY leftMoEDAL particles out, [ that parameter are space otherwise uncovered can be explored by PoS(CORFU2017)002 , 1 , , 438 226 , 461 , 87 34 97B , 427 (2000)]; Vasiliki A. Mitsou 327 , 505 (1977); , 1985 (2012). 72 130 , 194 (1974) [Pisma Zh. , 088 (2006); T. W. Kephart, 20 0601 , 1430050 (2014). 29 , arXiv:1306.4213 [hep-ph] (2013). , 347 (2000) [Phys. Rept. , S08005 (2008). 327 3 , 088 (2007); D. G. Pak, P. M. Zhang and L. P. Zou, 10 0701 , 60 (1931). , 3225 (2015). Technical Design Report of the MoEDAL Experiment 62 , 176 (2017). 133 , 87 (1983); D. J. Gross and M. J. Perry, Nucl. Phys. B , 757 (1969); J. Preskill, Ann. Rev. Nucl. Part. Sci. http://moedal.web.cern.ch/ 51 , 2227 (1975); Y. Nambu, Nucl. Phys. B 165 1710 11 , S08001 (2008). 3 On the magnetic monopole mass , 817 (1948). , 276 (1974); A. M. Polyakov, JETP Lett. , 2212 (2012). 74 79 , 283 (1979); G. Lazarides, M. Magg and Q. Shafi, Phys. Lett. 72 , no. 27, 1550164 (2015); A. Rajantie, JHEP 86B [LHCb Collaboration], JINST 30 , 430 (1974)]. [MoEDAL Collaboration], Int. J. Mod. Phys. A , IEEE Trans. Nucl. Sci. 20 et al. [MoEDAL Collaboration], et al. et al. et al. , 1 (2015). Searching for magnetic monopoles trapped in accelerator material at the Large Hadron , arXiv:1206.6793 [physics.ins-det] (2012). 582 T. W. Kephart, C. A. Lee andInt. Q. J. Shafi, Mod. JHEP Phys. A G. K. Leontaris and Q. Shafi, JHEP (1980); R. d. Sorkin, Phys. Rev.29 Lett. (1983); J. S. Schwinger, Science (1984); A. Achucarro and T. Vachaspati, Phys. Rept. Eksp. Teor. Fiz. E. Witten, Phys. Lett. T. Sloan, T. Sloan, Eur. Phys. J. C Collider (2007); S. Burdin, M. Fairbairn, P.Rept. Mermod, D. Milstead, J. Pinfold, T. Sloan and W. Taylor, Phys. CERN-LHCC-2009-006, MoEDAL-TDR-001, and references therein. The author is grateful to the Corfu2017 organisers for the kind invitation to present this talk. [7] A. A. Alves, Jr. [8] M. D. Joergensen, A. De Roeck, H.-P. Hachler, A. Hirt, A. Katre, P. Mermod, D. Milstead and [9] A. De Roeck, H. P. Hächler, A. M. Hirt, M.-D. Joergensen, A. Katre, P. Mermod, D. Milstead and [1] The MoEDAL experiment web page: [2] J. Pinfold [6] B. Acharya [5] M. Fairbairn, A. C. Kraan, D. A. Milstead, T. Sjostrand, P. Z. Skands and T. Sloan, Phys. Rept. [3] L. Evans and P. Bryant, JINST [4] A. De Roeck, A. Katre, P. Mermod, D. Milstead and T. Sloan, Eur. Phys. J. C [15] V. Vento and V. S. Mantovani, [14] B. Julia and A. Zee, Phys. Rev. D [11] P. A. M. Dirac, Proc. Roy. Soc.[12] Lond. A P. A. M. Dirac, Phys. Rev. [13] G. ’t Hooft, Nucl. Phys. B [10] A. Sopczak She acknowledges support by the Generalitatment Valenciana CON.21.2017-09.02.03 through and the MoEDAL-supporting the agree- Excellenceish Project MINEICO PROMETEO-II/2017/033, under by the project the FPA2015-65652-C4-1-R, Span- Project by the SEV-2014-0398, Severo and Ochoa by Excellence Centre BBVA a Foundation. 2017 Leonardo Grant for Researchers and Cultural Creators, References The MoEDAL experiment at LHC Acknowledgments PoS(CORFU2017)002 , 453 , 60 238 127 Vasiliki A. Mitsou , 87 (2008); Eur. Phys. , 099905 (2009)]; 56 Regularised Kalb-Ramond 103 , 176 (2003). Can the 750 GeV enhancement , 565 , 061801 (2017). [arXiv:1804.01702 [hep-th]] (2018). Turning the LHC Ring into a New 118 , no. 09, 1650053 (2016); Phys. Lett. B to appear , 261803 (2012). 31 , 29 (2016). , 067 (2016). , 279 (2015). 109 to appear , 052009 (2016). 756 65 , 239 (1978). 93 1608 , 102 (1982). , 1317 (1991); N. E. Mavromatos and , no. 10, 104025 (2017); , 341 (1989). 49 79B 44 95 , no. 24, 241601 (2017) 11 63 , 360 (1997); W. S. Bae and Y. M. Cho, J. Korean Phys. , 122 (2002). 119 , arXiv:1607.05592 [hep-ph] (2016). 391 Phys. Rev. D, 8N1 , 085 (2015). , no. 1, 68 (2018). , 1419 (1983) Erratum: [Phys. Rev. Lett. 78 , 195 (2012). 50 53 , 469 (1983). , no. 10, 40 (2016). 69 224 , arXiv:1604.05778 [hep-ex] (2016). PLANCK 2015 [MoEDAL Collaboration], Phys. Lett. B, [MoEDAL Collaboration], Phys. Rev. Lett. [MoEDAL Collaboration], JHEP [ATLAS Collaboration], Phys. Rev. Lett. [ATLAS Collaboration], Phys. Rev. D et al. et al. et al. et al. et al. , 791 (2005). , 587 (2009). 46 62 , 203 (2016). J. R. Ellis, J. S. Hagelin,(1984). D. V. Nanopoulos, K. A. Olive and M. Srednicki, Nucl. Phys. B doi:10.1016/j.physletb.2018.05.069 [arXiv:1712.09849 [hep-ex]]. J. Papavassiliou, Eur. Phys. J. C Magnetic Monopole with Finite Energy, J. C (2012). be a signal of light magnetic monopoles? Soc. 761 Physics Search Machine [41] J. R. Ellis, K. A. Olive, Y. Santoso and V. C. Spanos, Phys. Lett. B [40] V. A. Mitsou, PoS [39] H. Goldberg, Phys. Rev. Lett. [38] L. Patrizii and M. Spurio, Ann. Rev. Nucl. Part. Sci. [36] G. Aad [37] G. Aad [35] O. Gould and A. Rajantie, Phys. Rev. Lett. [34] B. Acharya [21] P. O. Mazur and J. Papavassiliou, Phys. Rev. D [22] N. E. Mavromatos and S. Sarkar, Phys. Rev. D [24] C. T. Hill, Nucl. Phys. B [33] B. Acharya [30] L. N. Epele, H. Fanchiotti, C. A. G. Canal, V. A. Mitsou and V. Vento, The MoEDAL experiment at LHC [16] Y. M. Cho and D. Maison, Phys. Lett. B [17] Y. M. Cho, K. Kimm and J. H. Yoon, Mod. Phys. Lett. A [23] Y. B. Zeldovich and M. Y. Khlopov, Phys. Lett. [25] V. K. Dubrovich, Grav. Cosmol. Suppl. [29] L. N. Epele, H. Fanchiotti, C. A. G. Canal, V. A. Mitsou and V. Vento, Eur. Phys. J. Plus [18] J. Ellis, N. E. Mavromatos and T. You, Phys. Lett. B [32] B. Acharya [19] M. Barriola and A. Vilenkin, Phys.[20] Rev. Lett. A. K. Drukier and S. Nussinov, Phys. Rev. Lett. [26] A. Rajantie, Contemp. Phys. [27] A. Rajantie, Phys. Today [28] L. N. Epele, H. Fanchiotti, C. A. Garcia Canal and V. Vento, Eur. Phys. J. C [31] M. Kalliokoski, J. W. Lämsä, M. Mieskolainen and R. Orava, PoS(CORFU2017)002 , 109 Vasiliki A. Mitsou , 106006 (2005); EPS-HEP2015 , 116013 (2008) 71 78 ibid. , 2922 (2014). 74 , in preparation. , 412 (2008); J. R. Ellis, , 055009 (2006) Erratum: [Phys. , 003 (2007). 73 665 , 012010 (2017); , 300 (2011); N. E. Mavromatos, 0705 , 166 (2015). , 04042 (2015); PoS 873 696 , 487 (2005)]. , 046 (2007). , 1956 (2012). , 044036 (2004); 95 1512 72 706 70 0703 , 005 (2008). , 073 (2005); G. F. Giudice and A. Romanino, 12 0810 0506 , 126007 (2004); J. R. Ellis, N. E. Mavromatos and , 2243 (2012); Eur. Phys. J. C 69 72 , 943 (2000); Phys. Lett. B , 04001 (2017). 32 164 , 028 (2017); J. Phys. Conf. Ser. , 039904 (2013)]. 87 2016 , Eur. Phys. J. C , 65 (2004) Erratum: [Nucl. Phys. B et al. 699 , 019901 (2013)]. Long-lived charged supersymmetric particles and MoEDAL 87 D. V. Nanopoulos, Gen. Rel. Grav. Rev. D Erratum: [Phys. Rev. D Nucl. Phys. B N. E. Mavromatos and M. Westmuckett, Phys. Rev. D O. Vives, N. E. Mavromatos, S. Sarkar and A. Vergou, Phys. Lett. B V. A. Mitsou, S. Sarkar and A. Vergou, Eur. Phys. J. C DESY-PROC-2017-02, 185-188 (2018); N. E. MavromatosCollaboration], and EPJ V. A. Web Mitsou Conf. [MoEDAL (2015); PoS CORFU [46] J. L. Diaz-Cruz, J. R. Ellis, K. A. Olive and Y. Santoso, JHEP [48] J. L. Feng, S. Iwamoto, Y. Shadmi and S. Tarem, JHEP [43] T. Jittoh, J. Sato, T. Shimomura and M. Yamanaka, Phys. Rev. D [44] S. Kaneko, J. Sato, T. Shimomura, O. Vives and M. Yamanaka, Phys.[45] Rev. D J. R. Ellis, K. A. Olive and Y. Santoso, JHEP [47] K. Hamaguchi, M. M. Nojiri and A. de Roeck, JHEP [49] N. Arkani-Hamed and S. Dimopoulos, JHEP [50] J. Mamuzic, N. E .Mavromatos, V. A. Mitsou, J. L. Pinfold, R.[51] Ruiz deG. Austri, Shiu K. and Sakurai, L. A. T. Santra, Wang, Phys. Rev. D The MoEDAL experiment at LHC [42] O. Buchmueller [52] V. A. Mitsou [MoEDAL Collaboration], EPJ Web Conf.