BSMPhysicsattheLHC,HERAFewtopicsthatcouldbeinterestingforEIC

Elisabetta Gallo

19/12/2018

ForHERAresults

Resultstakenfromoldslides

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LQe

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Leptoquarks

|BSMatLHC,HERA|E.Gallo19/12/2017,EICmeeting

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Xn

e,µ

AnalysisisoptimizedforthemainSMprocesswhichisWproduction

positrons electrons

ExcessathighPTXobservedbyH1ine+pcollisions

IsolatedleptonsatHERA

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NoexcessseenbyZEUS,eventsanalyzedintermsofanomaloussingletopproductionatHERAI

SomepossiblediagramsinR-parityviolationSUSYtoexplaintheH1excess

IsolatedleptonsatHERA

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Multileptons inH1anddoubly-chargedHiggs

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Excessofeventsin2e,3einH1,explanationcouldhavebeendoubly-chargedHiggs.LimitssetattheendofHERA.

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Quarkradius,NCandCCcrosssections

|BSMatLHC,HERA|E.Gallo19/12/2017,EICmeeting

LimitsonWRaround200GeV

LHCresults

Resultstakenfromslidesatrecentconferencesonwhateveriscouplingtoaleptonandaquark

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LHC

|BSMatLHC,HERA|E.Gallo19/12/2017,EICmeeting

LHCluminosity• Run1:2010-2012at 𝑠� = 7,8𝑇𝑒𝑉• Run2:2015-2018at 𝑠� = 13𝑇𝑒𝑉• Theincreasedluminosityandc.m.energyhasboostedBSMsearchesattheLHC.• Ratioofparton luminosities.

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2011, 7 7e9, 6.1 fb−1

2012, 8 7e9, 23.3 fb−1

2015, 13 7e9, 4.2 fb−1

2016, 13 7e9, 40.8 fb−1

2017, 13 7e9, 51.0 fb−1

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CMS ,ntegrated LumLnosLty, SS

FirstofallIamnotanexpert,atDESYwedoexotica,butdifferentsearches.• Icollectedfewresults/slideswhichIthoughtimportantforepphysics.• Manydifferentsearches,recentlyfocusedondarkmatter,SUSY,heavyresonances(boostedtechniques),long-livedparticles.• Morethan100ExoticapapersinATLAS/CMSonlyin2016.

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SearchesatCMS

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SearchesatATLAS,morerecentcompilation

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SearchforLeptoquarks inpairs

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FromslidesatSUSYconferenceatMumbai

UseofBRWmodel,assumenarrowresonances.Searchesin1st,2nd,3rd generation.Thelimitdependsonthebranchingratio𝛽, andnotonthecouplingto𝑙𝑞, 𝜆,thisisoppositetoep.

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Recentlyalotofinterest

|BSMatLHC,HERA|E.Gallo19/12/2017,EICmeeting

Consistentsetofanomaliesobservedrecentlyinflavour:

1)b->c,chargedcurrent,tauversusotherlepton

Observedby3experiments

PlotstakenfromaseminarfromIsidori ataCMSmeeting

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Recentlyalotofinterest

|BSMatLHC,HERA|E.Gallo19/12/2017,EICmeeting

Consistentsetofanomaliesobservedrecentlyinflavour:

2)b->s,neutralcurrents,muonversuselectron

AnomaliesobservedinangulardistributionsandotherobservablesbyLHCb.Resultsandfitsseemtopointtothefactthattherecouldbenewphysicsinb->s𝜇𝜇, andnotinb → see

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Recentlyalotofinterest

|BSMatLHC,HERA|E.Gallo19/12/2017,EICmeeting

Slidetakenfrom

aCMS

meetin

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Anomaliesareallseeninlepton-quarkcouplings.ExplanationcouldbeaLQcouplingto3rd generation

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LQsearches,pairandsingleproduction

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Slidetakenfrom

aCMSmeetin

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arXiv:170

6.07

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Athighmass,singleLQproductiondominatesoverpairproduction,thecrossingpointdependson𝜆andthequarkgeneration

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SearchforheavyneutrinosNR,WR

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AtHERA

StringentlimitsonWR

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SUSYR-parityviolation

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LHCstartedtolookforRP-conservingSUSY,duetotheveryclearsignatureofmissingtransverseenergy.

ButrecentlytheyhavestartedlookingalsoforRPVSUSY,examplehere.

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Search formassivelong-livedparticles decaying semileptonicallyintheLHCb detector

|BSMatLHC,HERA|E.Gallo19/12/2017,EICmeeting

arXiv:1612.00945

Lookformassivelong-livedparticles(LLP)inthemSUGRA model,wheretheneutralinos candecayinmuon+jets.Signatureisadisplacedvertex.LLPmass:[20-80]GeV,lifetime:[5-100]ps

LLPnotsohighmass,couplingtol+quarks

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DoublyChargedHiggs

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SlidesfromM.D’Alfonso atHH

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Conclusion

|BSMatLHC,HERA|E.Gallo19/12/2017,EICmeeting

• Wehavetakenonly3%ofwholeLHC/HL-LHCdata.Expectalso 𝑠� =14𝑇𝑒𝑉 atsomepoint.• ItisclearthatLHChasputveryhighmassconstraintsonalotofmodels.• Butwestilllookandfind“strange”thingsalsoatmuchlowerenergies.• RecentresultsfromLHCb onLFVseemstopointtoaleptoquark.• Itshowsthatonecanlookfornewphysicsalsoatlowerenergyandepisamuch“cleaner”environmentcomparedtoLHC.• b- andc-tagging,taureconstruction,long-livedparticlesimportant.

AlsoalotofPDFsresultsfromLHCbynow.WeatDESYareinvolvedinW-chargeasymmetry(u/d),W+charm(strange),jetcrosssections(gluonatmid-highx),top