超对称现象与宇宙-中科院物理所-杨金民

SUSYPhenomenology&CosmicConnection杨金民中科院理论物理所2009.4.17于科大理论交叉中心目录1、IntroductiontoSUSY2、Fine-tuning&SUSY3、GUT&SUSY4、DarkMatter&SUSY5、ColliderSearchforSUSY6、OutlookWhatisandwhySUSY?SUSYmodels1、Introduction|F|BSUSY1.1WhatisandwhySUSY?起源于60年代末;纯数学逻辑物理模型创建于70年代初一直是研究热点，有30000篇文章发表Haber,Kane,Phys.Rept.117,75（cited3347times)超对称精细调节Affleck-DineBaryogenesis1.2SUSYModelsR-conservingSUSYModelsR-violatingSUSYModelsMSSMCMSSM(mSUGRA,GMSB,AMSB)Split-SUSYNMSSM····MSSMCMSSM(mSUGRA)mSUGRA不同的CMSSMSplit-SUSYFine-tuning大统一(GUT)暗物质(DM)MSSMsparticlesTeVgauginos/higgsinosTeVothersparticles：superheavyh130GeVh150GeV(CMSSM)MSSMNMSSMCMSSM-problemlittlehierarchySUSY-conservingpart:containsnodimensionfulparameterSUSY-breakingpart:triggerEWSB(TeV)generate-term(TeV)containsdimensionfulparameters(TeV)标准模型100GeV1TeV新物理？1015GeV2.Fine-tuning&SUSY1019GeV大统一2/52100GeV裸量（非物理）InSUSY:2抵销掉了留下了Howheavy?Dependson3.GUT&SUSYnotsensitivetosfermionslightgauginos/higgsino(??)SUSYsfermionsgauginos/higgsino大统一可以很重必须轻!但也不一定轻到TeV4.DarkMatter&SUSY标准模型Mass:weak-scaleInteraction:weak-scale暗物质WIMP哪个超对称粒子是暗物质?都可能WIMPSuperWIMPmSUGRASplit-SUSY暗物质:neutralinosfermionsgauginos/higgsino暗物质可能很重必须轻!（TeV）5、SUSYSearchatCollidersLEP(I,II)TevatronITevatronIILHCclosedon-goingup-comingILCimaginingSUSYLHCILC沙漠淘金！1粒金子/100亿粒沙子LHCILCLHC上发现ILC上精确测量LHC上超对称的典型信号LHC超粒子sfermionsgauginoshiggsinossquarkssleptonsgluinocharginosneutralinos黑格斯h,HHALHC能发现那些超对称粒子？只能发现h,muonsHAGold-platedsignalLEPIIexcludedLHC黑格斯h,HHAmSUGRA@LHC(考虑到暗物质限制）hH,A,Hsfermionsgaugino/Higgsino黑格斯超粒子SM低能SUSYSplit-SUSY????LHC6、Outlook超对称是物理吗?LHC上发现？???E.Witten2002,BeijingLHCILC如果我们的思路是对的,将迎来高能物理的盛世！周末愉快！