Neutral top-pion and the Lepton Flavor Violating Processes

YUE Cong-Xing; YU Dong-Qi

Chinese Physics C> 2005, Vol. 29> Issue(11) : 1027-1032

Neutral top-pion and the Lepton Flavor Violating Processes

YUE Cong-Xing ^, ,
YU Dong-Qi

Department of Physics, Liaoning Normal University, Dalian 116029,China

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Abstract：
In the context of topcolor-assisted techicolor (TC2)model, we study the contributions of the neutral top-pion π0t to the lepton flavor violation (LFV) processes li→ljγ,li→ljlkll and t→clilj respectively. We find that the present experimental upper bound for μ→eγ gives severe constraints on the free parameters of the TC2 model. Under these constraints,we consider the processes li→ljlkll and t→c lilj generated by π0t exchange at the tree-level and the one loop level. Our numerical results show that the neutral top-pion π0t can enhance the branching ratios of these processes by several orders of magnitude. Some of those processes might be used to detect the possible signals of π0t in the futrue high energy experiment.

References

[1]

. Hill C T, Simmons E H. Phys. Rept., 2003, 381: 235,[Erratum Phys. Rept., 2004, 390: 553]2. Fukuda S et al(Super-Kamiokande Collaboration). Phys.Rev. Lett., 2001, 86: 5651; 5656; Ahmad Q R et al(SNO Collaboration). Phys. Rev. Lett., 2001, 87: 071301; 2002,89: 011301; 2002, 89: 011302; Davis R(Homestake Col-laboration). Rev. Mod. Phys., 2003, 75: 985; Fukuda Yet al(Super-Kamiokande Collaboration). Phys. Rev. Lett.,1998, 81: 1562; 1999, 82: 2644; 2000, 85: 39993. Hill C T. Phys. Lett., 1995, B345: 483; Lane K, Eichten E.Phys. Lett., 1995, B352: 383; Lane K. Phys. Lett., 1998,B433: 96; Cvetic G. Rev. Mod. Phys., 1999, 71: 5134. Burdman G. Phys. Rev. Lett., 1999, 83: 2888; HE H J,YUAN C P. Phys. Rev. Lett., 1999, 83: 28; HE H J, Kane-mura S, YUAN C P. Phys. Rev. Lett., 2002, 89: 1018035. YUE Chong-Xing, LIU Lan-Jun, YU Dong-Qi. Phys. Rev.,2003, D68: 035002; YUE Chong-Xing, YU Dong-Qi, LIULan-Jun. Phys. Rev., 2004, D69: 0950036. Bilenky S M, Petcov S T, Pontecorvo B. Phys. Lett., 1997,B67: 309; Pectcov S T. Sov. J. Nucl. Phys., 1997, 25: 340;CHENG T P, LI L F. Phys. Rev. Lett., 1980, 45: 19087. Groom D E et al(Particle Data Group). Eur. Phys. J., 2000,C15: 1; Hagiwara K et al. Phys. Rev., 2002, D66: 010001and references therein8. Hokuue T. Talk in PDF 2002, 24-28 May 2002, Williams-bury, Virginia, USA; Yusa Y. Talk in PDF2002, 24-28 May 2002, Williamsbury, Virginia, USA9. YUE Chong-Xing, WANG Lei, YU Dong-Qi. Phys. Rev.,2004, D70: 05401110. YUE Chong-Xing et al. Phys. Rev., 2001, D63: 115002;LIU Lan-Jun, YUE Chong-Xing. HEP NP, 2004, 28(5):475-478(in Chinese)(刘兰君，斤崇兴.高能物理与核物理，2004, 28(5): 475-478)11. CAO J J, XIONG Z H, YANG J M. Phys. Rev., 2003, D67:071701

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[2]	CHEN Lan-Li , XU Wen-Na , WANG Xue-Lei . Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders. Chinese Physics C, 2007, 31(3): 232-235.
[3]	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.
[4]	Medina Ablikim , CHEN Jiang-Chuan , RONG Gang , ZHANG Da-Hua . Cabbibo Suppressed Semileptonic Decay D0→π－e+ve. Chinese Physics C, 2005, 29(1): 5-8.
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[8]	YUE Chong-Xing , ZHANG Yan-Ming , LIU Lan-Jun . Z′and Lepton Flavor-Violation Tau Decays. Chinese Physics C, 2003, 27(7): 564-566.
[9]	LV Cai-Dian . Toward a Theory of Non-leptonic Two-Body B Decays in QCD. Chinese Physics C, 2002, 26(S1): 20-24.
[10]	BES Collaboration . Measurement of Inclusive Semileptonic Branching Fractions for D^－→e^－X and D⁰→e^－X. Chinese Physics C, 2002, 26(6): 547-556.
[11]	YUE Chong-Xing , XU Qing-Jun , LIU Guo-Li . Production and Decay of the Neutral Top-Pion in High Energy e⁺e^－ Colliders. Chinese Physics C, 2002, 26(7): 672-677.
[12]	ZHANG Jin-Yu , WAN Ling-De , WANG Xue-Lei , YANG Yue-Ling , LI Bing-Zhong . Searching for Neutral Toppion in TC2 Model via a Flavor-Changing Process. Chinese Physics C, 2002, 26(12): 1209-1213.
[13]	Yu Hong , Shen Qixing . Multi-channel Coupling in the Hadronic Decay Process J/ψ→ωπ⁺π^－. Chinese Physics C, 1997, 21(2): 123-129.
[14]	Li Zuohong , Hou Yunzhi . Semileptonic B-Meson Decays in SU(3). Chinese Physics C, 1994, 18(8): 715-723.
[15]	YU Hong , SHEN Qi-Xing . HELICITY FORMALISM OF THE ANGULAR DISTRIBUTION FOR THE J/ψ HADRONIC DECAY PROCESS. Chinese Physics C, 1990, 14(6): 504-508.
[16]	YU Hong , SHEN Qi-Xing . THE MOMENT ANALYSIS FOR THE J/ψ HADRONIC DECAY PROCESS. Chinese Physics C, 1990, 14(10): 875-881.
[17]	LIN Jin-Hu , ZHENG Zhe-Zhu . THE HADRON 1→0 DECAY PROCESSESIN A 3+1 DIMENSIONAL THEORY. Chinese Physics C, 1986, 10(2): 153-157.
[18]	SHEN Qi-Xing , LI Bing-An , YU Hong , ZHANG Mei-Man . PRODUCTION OF A 3^－+ GLUEBALL IN J/ψ RADIATIVE DECAY. Chinese Physics C, 1984, 8(5): 573-578.
[19]	YU Hong , LI Bing-An , SHEN Qi-Xing , ZHANG Mei-Man . GLUEBALL COMPONENT OF THE PSEUDOMESON AND ITS PRODUCTION IN J/ψ RADIATIVE DECAY. Chinese Physics C, 1984, 8(3): 285-290.
[20]	DING Yi-Bing , ZHAO Guang-Da . DECAY PROCESSES IN MASSIVE STRATON MODEL OF MESONS. Chinese Physics C, 1983, 7(1): 28-34.

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YUE Cong-Xing and YU Dong-Qi. Neutral top-pion and the Lepton Flavor Violating Processes[J]. Chinese Physics C, 2005, 29(11): 1027-1032.

YUE Cong-Xing and YU Dong-Qi. Neutral top-pion and the Lepton Flavor Violating Processes[J]. Chinese Physics C, 2005, 29(11): 1027-1032. shu

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Received: 2005-02-21
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Neutral top-pion and the Lepton Flavor Violating Processes

Corresponding author: YUE Cong-Xing,

Department of Physics, Liaoning Normal University, Dalian 116029,China

Received Date: 2005-02-21

Accepted Date: 1900-01-01

Available Online: 2005-11-05

Abstract: In the context of topcolor-assisted techicolor (TC2)model, we study the contributions of the neutral top-pion π0t to the lepton flavor violation (LFV) processes li→ljγ,li→ljlkll and t→clilj respectively. We find that the present experimental upper bound for μ→eγ gives severe constraints on the free parameters of the TC2 model. Under these constraints,we consider the processes li→ljlkll and t→c lilj generated by π0t exchange at the tree-level and the one loop level. Our numerical results show that the neutral top-pion π0t can enhance the branching ratios of these processes by several orders of magnitude. Some of those processes might be used to detect the possible signals of π0t in the futrue high energy experiment.

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Neutral top-pion and the Lepton Flavor Violating Processes

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