beyond the standard model in search of supersymmetry

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1、BEYONDTHESTANDARDMODEL(INSEARCHOFSUPERSYMMETRY)D.I.KazakovBLTP,JINR,DubnaandITEP,Moscowe-mail:kazakovd@thsun1.jinr.ru

 AbstractarXiv:hep-ph/0012288v211Jan2001Thepresentlecturescontainanintroductiontolowenergysupersymmetry,anewsymmetrythatrelat

2、esbosonsandfermions,inparticlephysics.TheStandardModeloffundamentalinteractionsisbrie yreviewed,andthemotivationtointroducesupersymmetryisdiscussed.Themainnotionsofsupersymmetryareintroduced.ThesupersymmetricextensionoftheStandardModel-theMinimalSupersymmetricStandardModel-isc

3、onsideredinmoredetail.PhenomenologicalfeaturesoftheMSSMaswellaspossibleexperimentalsignaturesofSUSYaredescribed.AnintriguingsituationwiththesupersymmetricHiggsbosonisdiscussed.

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23、LecturesgivenattheEuropeanSchoolonHighEnergyPhysics,Aug.-Sept.2000,Cara-mulo,Por

24、tugalContents1Introduction.TheStandardModelandbeyond32Whatissupersymmetry?Motivationinparticlephysics72.1Unicationwithgravity................................72.2Unicationofgaugecouplings.............................82.3Solutionofthehierarchyproblem...........................

25、132.4BeyondGUTs:superstring..............................153Basicsofsupersymmetry153.1AlgebraofSUSY....................................163.2Superspaceandsuperelds...............................173.3ConstructionofSUSYLagrangians..........................203.4Thescalarpotential

26、..................................233.5SpontaneousbreakingofSUSY............................234SUSYgeneralizationoftheStandardModel.TheMSSM264.1Theeldcontent....................................274.2LagrangianoftheMSSM...............................284.3Propertiesofinteraction

27、s...............................294.4Creationanddecayofsuperpartners.........................315BreakingofSUSYintheMSSM335.1Thehiddensector:fourscenarios...........................335.2Thesofttermsandthemassformulas........................385.2.1Gaugino-higgsinomassterms......

28、...................385.2.2Squarkandsleptonmasses.............