LFV decays of Z boson in Minimal R-symmetric Supersymmetric Standard Model

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英文篇名：LFV decays of Z boson in Minimal R-symmetric Supersymmetric Standard Model 作者：孙科盛 ; 陈建宾 ; 杨秀一 ; 崔生恺 英文作者：Ke-Sheng Sun;Jian-Bin Chen;Xiu-Yi Yang;Sheng-Kai Cui;Department of Physics, Baoding University;College of Physics and Optoelectronic Engineering, Taiyuan University of Technology;School of Science, University of Science and Technology Liaoning;Department of Physics, Hebei University; 英文关键词：R-symmetry;;MRSSM;;lepton flavor violation 中文刊名：KNWL 英文刊名：中国物理C 机构：Department of Physics, Baoding University;College of Physics and Optoelectronic Engineering, Taiyuan University of Technology;School of Science, University of Science and Technology Liaoning;Department of Physics, Hebei University; 出版日期：2019-04-15 出版单位：Chinese Physics C 年：2019 期：v.43 基金：Supported by the National Natural Science Foundation of China(NNSFC)(11747064,11805140);; the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(2017113);; the Foundation of Department of Education of Liaoning province(2016TSPY10);; the Youth Foundation of the University of Science and Technology Liaoning(2016QN11) 语种：英文; 页：KNWL201904004 页数：9 CN：04 ISSN：11-5641/O4 分类号：49-57

摘要

A future Z-factory will offer the possibility of studying rare Z decays Z → l_1l_2, such as those leading to lepton flavor violation(LFV) final states. In this work, by considering the constraints from radiative two-body decays l_2→ l_1γ, we investigate the LFV decays Z → l_1l_2 in the framework of the Minimal R-symmetric Supersymmetric Standard Model with two benchmark points from the existing literature. The flavor-violating off-diagonal entries Б~(12), Б~(13) and Б~(23) are constrained by the current experimental bounds of l_2→ l_1γ. Considering recent experimental constraints, we also investigate Br(Z → l_1l_2) as a function of M_D~W. The numerical results show that the theoretical predictions of Br( Z → l_1l_2) in the MRSSM are several orders of magnitude below the current experimental bounds. The LFV decays Z → eτ and Z →μт may be promising observation targets in future experiments.
        A future Z-factory will offer the possibility of studying rare Z decays Z → l_1l_2, such as those leading to lepton flavor violation(LFV) final states. In this work, by considering the constraints from radiative two-body decays l_2→ l_1γ, we investigate the LFV decays Z → l_1l_2 in the framework of the Minimal R-symmetric Supersymmetric Standard Model with two benchmark points from the existing literature. The flavor-violating off-diagonal entries Б~(12), Б~(13) and Б~(23) are constrained by the current experimental bounds of l_2→ l_1γ. Considering recent experimental constraints, we also investigate Br(Z → l_1l_2) as a function of M_D~W. The numerical results show that the theoretical predictions of Br( Z → l_1l_2) in the MRSSM are several orders of magnitude below the current experimental bounds. The LFV decays Z → eτ and Z →μт may be promising observation targets in future experiments.

引文

[1]M.Tanabashi et al(Particle Data Group),Phys.Rev.D,98:030001(2018)
    2 R.Akers et al(OPAL Collaboration),Z.Phys.C,67:555(1995)
    3G.Aad et al(ATLAS Collaboration),Phys.Rev.D,90:072010(2014)
    4 M.Aaboud et al(ATLAS Collaboration),ar Xiv:1804.09568
    5P.Abreu et al(DELPHI Collaboration),Z.Phys.C,73:243(1997)
    6 L.Calibbi,G.Signorelli,Riv.Nuovo Cim.,41:1(2018)
    7G.D.Kribs,E.Poppitz,and N.Weiner,Phys.Rev.D,78:055010(2008)
    8 P.Fayet,Nucl.Phys.B,90:104(1975)
    9 A.Salam and J.Strathdee,Nucl.Phys.B,87:85(1975)
    10 P.Diessner and W.Kotlarski,Po S CORFU,2014:079(2015)
    11P.Diessner,J.Kalinowski,W.Kotlarski,and D.St?ckinger,Adv.High Energy Phys,2015:760729(2015)
    12P.Diessner,J.Kalinowski,W.Kotlarski,and D.St?ckinger,JHEP,1412:124(2014)
    13P.Diessner,W.Kotlarski,S.Liebschner,and D.St?ckinger,JHEP,1710:142(2017)
    14P.Diessner,J.Kalinowski,W.Kotlarski,and D.St?ckinger,JHEP,1603:007(2016)
    15A.Kumar,D.Tucker-Smith,and N.Weiner,JHEP,1009:111(2010)
    16 A.E.Blechman,Mod.Phys.Lett.A,24:633(2009)
    17 G.D.Kribs,A.Martin,and T.S.Roy,JHEP,0906:042(2009)
    18 C.Frugiuele and T.Gregoire,Phys.Rev.D,85:015016(2012)
    19 J.Kalinowski,Acta Phys.Polon.B,47:203(2016)
    20S.Chakraborty,A.Chakraborty,and S.Raychaudhuri,Phys.Rev.D,94:035014(2016)
    21J.Braathen,M.D.Goodsell,and P.Slavich,JHEP,1609:045(2016)
    22 P.Athron,J.-hyeon Park,T.Steudtner,D.St?ckinger,and A.Voigt,JHEP,1701:079(2017)
    23C.Alvarado,A.Delgado,and A.Martin,Phys.Rev.D,97:115044(2018)
    24K.-S.Sun,T.-F.Feng,T.-J.Gao,and S.-M.Zhao,Nucl.Phys.B,865:486(2012)
    25M.Aaboud et al(ATLAS Collaboration),Phys.Rev.D,98:092012(2018)
    26 F.Staub,ar Xiv:0806.0538
    27W.Porod,F.Staub,and A.Vicente,Eur.Phys.J.C,74:2992(2014)
    28 G.Passarino and M.J.G.Veltman,Nucl.Phys.B,160:151(1979)
    29 H.H.Patel,Comput.Phys.Commun.,197:276(2015)
    30A.Denner,S.Dittmaier,and L.Hofer,Comput.Phys.Commun,212:220(2017)
    31 A.Denner and S.Dittmaier,Nucl.Phys.B,658:175(2003)
    32 A.Denner and S.Dittmaier,Nucl.Phys.B,734:62(2006)
    33 A.Denner,Fortsch.Phys.,41:307-420(1993)
    34J.Rosiek,P.Chankowski,A.Dedes,S.Jager,and P.Tanedo,Comput.Phys.Commun.,181:2180(2010)
    35A.M.Baldini et al(MEG Collaboration),Eur.Phys.J.C,76:434(2016)
    36B.Aubert et.al(BABAR Collaboration),Phys.Rev.Lett.,104:021802(2010)
    37 G.-J.Ding and M.-L.Yan,Phys.Rev.D,77:014005(2008)
    38 J.Adam et al(MEG Collab.),ar Xiv:1301.7225
    39A.Crivellin,Z.Fabisiewicz,W.Materkowska,U.Nierste,S.Pokorski,and J.Rosiek,JHEP,06:003(2018)
    40 M.Bona et al(Super B Collab.),ar Xiv:0709.0451
    41 P.Diessner,Ph D thesis,Dresden,Tech.U.,2016
    42 R.Benbrik and C.-K.Chua,Phys.Rev..D,78:075025(2008)
    43J.A.Aguilar-Saavedra et al(ECFA/DESY LC Physics Working Group),ar Xiv:0106315
    44S.Heinemeyer,W.Hollik,A.M.Weber,and G.Weiglein,ar Xiv:0711.0456
    45 J.Erler and P.Langacker,ar Xiv:0807.3023