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Chinese Physics C> 1999, Vol. 23> Issue(7) : 636-643 

Rare B-Decays and Z0-Penguin Contributions From the Charged Pseudo-Goldstone Bosons

  •  Department of Physics, Henan Normal University, Xinxiang 453002

  • In this paper, the one-loop contributions to the rare B-decays B→Xs,dνν and Bs,d→1+1－(1= e,μ,τ) from the charged pesudo-Goldstone bosons P± and P±8 are calculated. Within the parameter space, we find that: (a) the P± and P8± can provide rather large enhancements to the branching ratios of the rare B-decays in question, the maximum increase is about a factor of 3 to Br(B→Xs,d,νν), and a factor of 5 to Br (Bs,d→1+1－); (b) the color-octet pesudo-Goldstone boson P±8 dominates the contributions to all rare B-decays under consideration; (c) no limit on the masses of charged pesudo-Goldstone bosons can be achieved from the current experimental data, but the forthcoming data may reach the sensitivity to find the signals of new physics beyond the Standard Model.
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    [1] Buras A J, Reischer K In: Buras A J, Lindner M ed. hep–ph/9704376, to Appear in Heavy Flavours Ⅱ,World Scientific, 19972 Buchalla G, Buras A J, Lautenbacher M E. Rev. Mod. Phys., 1996, 68: 11253 Farhi E, Susskind L. Phys. Rev. 1979, D20:34044 Eichten E, Hinchliffe I, Lane K et al. Rev. Mod. Phys., 1984, 56:579; Phys. Rev. 1986, D34: 1547 5 Buchalla G, Buras A J, Harlander M K. Nucl. Phys. 1991, B349: 1 6 Burdman G hep–ph/9802232;Lu Gongru, Cao Yigang, Xiong Zhaohua, et al. High Energy Phys. and Nucl. Phys. (in Chinese), 1997, 21:1005;(鲁公儒, 曹义刚, 熊兆华等. 高能物理与核物理,1997,21:1005);Lu Gongru, Xiong Zhaohua, Cao Yigang, et al. High Energy Phys. and Nucl. Phys. (in Chinese), 1997, 21:897;(鲁公儒, 熊兆华, 曹义刚等. 高能物理与核物理,1997,21:897);Lu Caidian, Xiao Zhenjun. Phys. Rev. 1996, D53: 2529;Lu Gongru, Xiong Zhaohua, Cao Yigang. Nucl. Phys. 1997, B487:43; Misiak M, Pokorski S, Rosiek J.He–ph/9703442 7 Glashaw S, Weinberg S. Phys. Rev., 1977, D15:1958 8 Ellis J, Gaillard M K. Nanopoulos D V et al. Nucl. Phys., 1981, B182:5059 Inami T, Lim C S. Prog. Theor. Phys., 1981, 65:297 10 Cho P, Greistein B. Nucl. Phys., 1991, B365: 27911 Xiao Zhenjun, Lu Linxia. Guo Hongkai et al., Eur. Phys. J., 1999, C7:487 12 ALEPH Collaboration. Contribution (PA10–019) to the 28th IHEP, July 1996, Warsaw, Poland13 Carol Anway–Wiese (CDF Collab.). FERMILAB–CONF–95–201–E, 1995; Speer T et al (CDF Collab.).FERMILAB–CONF–96–320–E, 1996

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Xiao Zhenjun, Zhang Jinyu, Lu Linxia and Lu Gongru. Rare B-Decays and Z0-Penguin Contributions From the Charged Pseudo-Goldstone Bosons[J]. Chinese Physics C, 1999, 23(7): 636-643.
Xiao Zhenjun, Zhang Jinyu, Lu Linxia and Lu Gongru. Rare B-Decays and Z0-Penguin Contributions From the Charged Pseudo-Goldstone Bosons[J]. Chinese Physics C, 1999, 23(7): 636-643. shu
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Received: 1998-05-04
Revised: 1900-01-01
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Rare B-Decays and Z0-Penguin Contributions From the Charged Pseudo-Goldstone Bosons

    Corresponding author: Xiao Zhenjun,
  • Department of Physics, Henan Normal University, Xinxiang 453002
  • Received Date: 1998-05-04
  • Accepted Date: 1900-01-01
  • Available Online: 1999-07-05

Abstract: In this paper, the one-loop contributions to the rare B-decays B→Xs,dνν and Bs,d→1+1－(1= e,μ,τ) from the charged pesudo-Goldstone bosons P± and P±8 are calculated. Within the parameter space, we find that: (a) the P± and P8± can provide rather large enhancements to the branching ratios of the rare B-decays in question, the maximum increase is about a factor of 3 to Br(B→Xs,d,νν), and a factor of 5 to Br (Bs,d→1+1－); (b) the color-octet pesudo-Goldstone boson P±8 dominates the contributions to all rare B-decays under consideration; (c) no limit on the masses of charged pesudo-Goldstone bosons can be achieved from the current experimental data, but the forthcoming data may reach the sensitivity to find the signals of new physics beyond the Standard Model.

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