河南高校杰出科研人才创新工程项目haipurt-CERNIndico课件

LowEnergySUSYinlightofLHCHiggsData

（ITP,Beijing）JinMinYang2013.6.4上海交通大学Outline

3Conclusion1IntroductiontoHiggs&SUSYLHCHiggsDataThenatureofHiggsHiggsindicatesSUSYSUSYandmodelsStatusofsomeSUSYmodels2StatusoflowenergySUSYFurtherprobesofSUSYBBCNewsNov19,2012

SUSYmaynotbedead,buttheselatestresultshavecertainlyputitintohospitalHiggsproductionatLHC：Higgsdecays:1IntroductiontoHiggs&SUSY

Red

（Moriond)

Black（Dec,2012）

LHCHiggsDataNimaArkani-HamedIftheHiggsturnsouttohavespintwo,he’llquitphysics.IftheHiggsturnsouttobeatechni-dilaton,he’llkillhimself.•••••••••Sofar,wecansayHiggshasbeendiscovered.Thenewlydiscoveredparticle:

canitbespin-2?

canitbeCP-odd?

canitbeadilaton?GoldstoneBoson(massless)HiggsBoson

(massive)SpontaneousSymmetryBreakingeatenbyguagebosonMassiveGaugeBosonThenatureofHiggsboson:alightfundamentalHiggsboson

indicatesSUSYWhy?Mh<135GeVinMSSMMh<150GeVinanylowenergySUSYmodelInSMHiggsmassisafreeparameterHiggsmass125GeV---signalofSUSY

Reason-1:SM

100GeV

1TeV

SUSY1015GeV

GUT

2/52100GeVbareIfSMvaliduptoGUTscale,thetheoryhasextremefine-tuning!1693，Newton‘Gravitationlawconsistentwithstaticuniverse?’Fine-tuningProblemReason-2:125GeVHiggs---vacuumnotstable

---needSUSY

Reason-3:EdwardWitten(Higgs-related)WhatisSUSY?EdwardWittenCMSSM/mSUGRAGMSB,AMSB,···SUSYMSSM,NMSSM,nMSSM,pMSSMR-violatingSUSYSUSYmodelsonthemarket:

Dynamicalsolutionto-problemSolvelittlehierarchyproblemWhyNMSSM?TheoreticallymotivatedE6models(superstring-inspired)SO(10)U(1)…stringscale

atlowenergy:S,Hu,

Hd

+heavyparticlesU(1)globalPQtobreakU(1)PQ(NMSSM)tadpole

(nMSSM)cubicterm2StatusoflowenergySUSY

ConsidervariousSUSYmdoels

Considerallexperimentalconstraints，scantheparameterspace

ExaminetheallowedparameterspacearXiv:1207.3698;1202.5821

Cao,Heng,Yang,Zhudiphoton：ZZ*：Allchannels：MoreaboutCMSSM/mSUGRA：So,confrontedwithLHCdata:FurtherProbesofSUSYThroughmeasuringHiggscouplings:arXiv:1207.3698;

Cao,Heng,Yang,ZhuYukawacouplingstotopandbottomThroughdarkmatterdetection:lightdarkmatter(8-10GeV)?arXiv:1104.1754

Cao,Hikasa,Wang,YangNMSSMMay17,2013

CDMStalkatFNAL(byE.Figueroa-Feliciano)arXiv:1206.3865Cao,Han,Wu,Yang,ZhangSearchforstoppairatLHC:StudyZversus

atLHC:arXiv:1301.4641Cao,Wu,Wu,YangStudyHiggspairproduction

atLHC:arXiv:1301.6437Cao,Heng,Shang,Wan,YangThinkaboutHiggs-factory:

C.Han,L.Wu,P.Wu,JMY,workinprogressSUSYHowaboutZ-factory？JMY,arXiv:1006.25943ConclusionConfrontedwithLHCHiggsdata:SomeSUSYmodelsarehealthySomeSUSYmodelsneedtobesenttohospitalLHC,HL-LHC,HiggsfactorycanfurtherprobeSUSY:ThroughmeasuringHiggscouplingsThroughsomerareprocesses(hh,Z…)ThroughstoppairproductionDarkmatterdetectionexpt(XENON)caninterplayAfterall,whenandwherecanSUSYbediscovered？Where?EdwardWittenOnSUSY,FrankWilczekisstillabeliever,basedontherenormalizationgroupcalculationhewasaco-authorofbackin1981.IfnoSUSYturnsupatthenextLHCrunthough,evenhewillthrowinthetowel:Icannotbelievethissuccessisanaccident.Butinsciencefaithisameans,notanend.Supersymmetrypredictsnewparticles,withcharacteristicproperties,thatwillcomeintoviewastheLHCoperatesathigherenergyandintensity.