a supersymmetry primer

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1、hep-ph/9709356v3April7,1999ASUPERSYMMETRYPRIMERSTEPHENP.MARTINyRandallPhysicsLaboratory,UniversityofMichiganAnnArborMI48109-1120USAIprovideapedagogicalintroductiontosupersymmetry.Thelevelofdis-cussionisaimedatreaderswhoarefamiliarwiththeStandardModelandquantumeldtheory,

2、butwhohavelittleornopriorexposuretosupersym-metry.Topicscoveredinclude:motivationsforsupersymmetry;thecon-structionofsupersymmetricLagrangians;supersymmetry-breakinginterac-tions;theMinimalSupersymmetricStandardModel(MSSM);R-parityanditsconsequences;theoriginsofsupersymm

3、etrybreaking;themassspectrumoftheMSSM;decaysofsupersymmetricparticles;experimentalsignalsforsupersymmetry;andsomeextensionsoftheminimalframework.ThisisanextendedversionofacontributiontothebookPerspectivesonSupersym-metry,editedbyG.L.Kane(WorldScientic,Singapore1998).Con

4、tents1Introduction22Interlude:NotationsandConventions123Supersymmetriclagrangians153.1Thesimplestsupersymmetricmodel:afreechiralsupermultiplet.......163.2Interactionsofchiralsupermultiplets.......................203.3Lagrangiansforgaugesupermultiplets....................

5、..233.4Supersymmetricgaugeinteractions........................243.5Summary:Howtobuildasupersymmetricmodel................26arXiv:hep-ph/9709356v37Apr19994Softsupersymmetrybreakinginteractions285TheMinimalSupersymmetricStandardModel305.1Thesuperpotentialandsupersymmetrici

6、nteractions..............305.2R-parity(alsoknownasmatterparity)anditsconsequences..........345.3SoftsupersymmetrybreakingintheMSSM...................365.4HintsofanOrganizingPrinciple.........................376Originsofsupersymmetrybreaking416.1Generalconsiderationsforsu

7、persymmetrybreaking...............416.2Thegoldstinoandthegravitino..........................456.3Gravity-mediatedsupersymmetrybreakingmodels...............496.4Gauge-mediatedsupersymmetrybreakingmodels................50ySinceOctober1,1998:DepartmentofPhysics,NorthernIlli

8、noisUniversity,DeKalbIL60115,andTheoreticalPhysics,FermiNationalAcceleratorLaboratory,BataviaIL60510.em