Z′and Lepton Flavor-Violation Tau Decays

YUE Chong-Xing; ZHANG Yan-Ming; LIU Lan-Jun

Chinese Physics C> 2003, Vol. 27> Issue(7) : 564-566

Z′and Lepton Flavor-Violation Tau Decays

Department of Physics,Liaoning Normal University,Dalian 116029,China2 College of Physics and Information Engineering,He′nan Normal University,Xinxiang 453002,China

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Abstract：
There are many models beyond the standard model predicting the existence of non-universal gauge bosons Z′,which can give rise to very rich phenomena. We calculate the contributions of the non-universal gauge bosons Z′,predicted by topcolor-assisted technicolor (TC2) models and flavor-universal TC2 models,to the lepton flavor-violation tau decays τ →l iγ and τ →l il jl k. We find that the branching ratio Br(τ →l il jl k) is larger than that of the process τ →l iγ in all of the parameter space. Over a sizable region of the parameter space,we have Br(τ →l il jl k)～10^－8,which may be tested in the future experiments.

References

[1]

. Erler J,Langacker P.Phys.Lett.,1999,B456:68;Phys.Rev,Lett.,2000,84:212 2. Hill C T.Phys.Lett.,1995,B345:483;LaneK.Phys.Lett.,1998,B433:963. Popovic M B,Simmons E H.Phys.Rev.,1998,D58:095007;Burdman G,Evans N.Phys.Rev.,1999,D59:115005 4. Buchalla G et al.Phys.Rev.,1996,D53:5185;Hill C T,Simmons E H.hep-ph/0203079 5 YUE Chong-Xing et al. Commun. Theor. Phys., 2002,38:461;YUE Chong-Xing etal.High Energy Phy s.and Nucl Phys., 2002,26(10):1004(in Chinese);YUE Chong-Xing, LI Jian-Tao.High Energy Phys.and Nucl Phys.,2001,25(10):445(in Chinese)(岳崇兴等.高能物理与核物理,2002,26(10):1004;岳崇兴,李建涛.高能物理与核物理,2001,25(10):445) 6. Fukuda S et al.Phys.Rev.Lett.,2000,85:39997. Fukuda S et al.Phys.Rev.Lett.,2001,86:5656;Ahmad Q R et al(SNO Collab.).Phys.Rev.Lett.,2001,87:071301;Phys.Rev.Lett.,2002,89:0113018. Cvetic G et al.Phys.Rev.,2002,D66:0340089. FENG J L,Nir Y,Shadmi Y.Phys.Rev.,2000,D61:113005;Babu K S,Kolda C.hep-ph/0206310;Sher M.hep-ph/0207136;Hisano J.hep-ph/0209005 10. Hokuue T.talk in DPF 2002(24—28 May 2002,Williamsburg,Virgina,USA);Yusa Y.talk in DPF 2002 (24—28 May 2002,Williamsburg,Virgina,USA);http: www.dpf2002.org/tau-physics.cfm 11 YUE Chong-Xing,ZHANG Yan-Ming,LIU Lan-Jun.Phys.Lett.,2002,B547:252

[1]	GAO Pu-Ze , MA Bo-Qiang . Nucleon Strange Asymmetry and the Light Quark Fragmentation Effect. Chinese Physics C, 2005, 29(10): 964-969.
[2]	HUANG Feng , XU Rong-Guang , MA Bo-Qiang . Contribution of Sigma Meson Cloud to Proton's Antiquark Distribution. Chinese Physics C, 2005, 29(1): 9-13.
[3]	YUE Cong-Xing , YU Dong-Qi . Neutral top-pion and the Lepton Flavor Violating Processes. Chinese Physics C, 2005, 29(11): 1027-1032.
[4]	LIU Lan-Jun , YUE Chong-Xing . Lepton Flavor Violating Processes l_i→l_jν_ll in Topcolor-AssistedTechnicolor Models. Chinese Physics C, 2004, 28(5): 475-478.
[5]	YUE Chong-Xing , ZHAO Ye , LI Hong , ZHAO Qi . Lepton Flavor Violating Z→l_il_jin Flavor-Universal Topcolor-Assisted Technicolor Models. Chinese Physics C, 2003, 27(12): 1070-1073.
[6]	LV Cai-Dian . Toward a Theory of Non-leptonic Two-Body B Decays in QCD. Chinese Physics C, 2002, 26(S1): 20-24.
[7]	BES Collaboration . Measurement of Inclusive Semileptonic Branching Fractions for D^－→e^－X and D⁰→e^－X. Chinese Physics C, 2002, 26(6): 547-556.
[8]	MA BoQiang , HUANG XinBing , Jacques Soffer . Flavor Separation of Quark toΛ-Baryon Fragmentation. Chinese Physics C, 2000, 24(3): 196-202.
[9]	LIU Bo , PENG GuangXiong , SHEN PengNian , HE ZeJun , CHEN Hong , MA WeiXing , ZHAO EnGuang , LU HongChao . Leptonic Decay and Radiative Transion of ψ′in Medium at Finite Temperature and Density. Chinese Physics C, 2000, 24(10): 969-973.
[10]	Liu Bo , Shen Pengnian , Jiang Huanqing , Chen Hong . Leptonic Decay 0f J/ψ at Finite Temperature and Densities. Chinese Physics C, 1998, 22(12): 1151-1155.
[11]	BES Collaboration . Determination of J/ψ Leptonic Branching Fraction Via ψ(2S)→π⁺π^－J/ψ. Chinese Physics C, 1996, 20(2): 97-106.
[12]	BES Collaboration . Precise Measurement of τ Mass. Chinese Physics C, 1995, 19(2): 97-105.
[13]	BES Collaboration . Study of ψ(2S) Decay to τ Lepton Pairs. Chinese Physics C, 1995, 19(7): 577-584.
[14]	Hou Yunzhi . Symmetry for Semileptonic Decays of B-Baryons. Chinese Physics C, 1994, 18(9): 836-841.
[15]	Li Zuohong , Hou Yunzhi . Semileptonic B-Meson Decays in SU(3). Chinese Physics C, 1994, 18(8): 715-723.
[16]	DU Dong-Sheng , XING Zhi-Zhong . CP-Violating Effects in Two-Body Baryonic Decays of B⁰－B⁰ System. Chinese Physics C, 1992, 16(5): 398-407.
[17]	LIU Yao-Yang . RADIATIVE DECAY OF Z⁰ AND HEAVY LEPTON. Chinese Physics C, 1985, 9(4): 505-507.
[18]	WU JING-YUAN , CHEN ZHONG-MO , ZHANG ZI-XIAN . A SENSITIVE METHOD TO DISTINGUISH THE SPIN OF THE HEAVY LEPTON τ FROM ITS TWO BODY DECAY ENERGY SPECTRA. Chinese Physics C, 1979, 3(1): 67-74.
[19]	WU JING-YUAN , WU DAN-DI , LI XIAO-YUAN . HEAVY LEPTON τ PRODUCED IN e⁺e^- ANNIHILATION BY THE INTERFERENCE BETWEEN ELECTROMAGNETIC AND WEAK INTERACTIONS AND PARITY VIOLATION EFFECTS. Chinese Physics C, 1979, 3(1): 108-112.
[20]	WU DAN-DI , LEE XIAO-YUAN . SPONTANEOUSLY BROKEN μ-LIKE CHARGE SYMMETRY, HEAVY LEPTONS AND μ→e+γ. Chinese Physics C, 1978, 2(2): 178-182.

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YUE Chong-Xing, ZHANG Yan-Ming and LIU Lan-Jun. Z′and Lepton Flavor-Violation Tau Decays[J]. Chinese Physics C, 2003, 27(7): 564-566.

YUE Chong-Xing, ZHANG Yan-Ming and LIU Lan-Jun. Z′and Lepton Flavor-Violation Tau Decays[J]. Chinese Physics C, 2003, 27(7): 564-566. shu

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Received: 2002-12-05
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Z′and Lepton Flavor-Violation Tau Decays

Corresponding author: YUE Chong-Xing,

Department of Physics,Liaoning Normal University,Dalian 116029,China2 College of Physics and Information Engineering,He′nan Normal University,Xinxiang 453002,China

Received Date: 2002-12-05
Accepted Date: 1900-01-01
Available Online: 2003-07-05

Abstract: There are many models beyond the standard model predicting the existence of non-universal gauge bosons Z′,which can give rise to very rich phenomena. We calculate the contributions of the non-universal gauge bosons Z′,predicted by topcolor-assisted technicolor (TC2) models and flavor-universal TC2 models,to the lepton flavor-violation tau decays τ →l iγ and τ →l il jl k. We find that the branching ratio Br(τ →l il jl k) is larger than that of the process τ →l iγ in all of the parameter space. Over a sizable region of the parameter space,we have Br(τ →l il jl k)～10^－8,which may be tested in the future experiments.