Rare B-Decays and Z<SUP>0</SUP>-Penguin Contributions From the Charged Pseudo-Goldstone Bosons

Xiao Zhenjun; Zhang Jinyu; Lu Linxia; Lu Gongru

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

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In this paper, the one-loop contributions to the rare B-decays B→X_s,dνν and B_s,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→X_s,d,νν), and a factor of 5 to Br (B_s,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.

References

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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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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

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→X_s,dνν and B_s,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→X_s,d,νν), and a factor of 5 to Br (B_s,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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Rare B-Decays and Z⁰-Penguin Contributions From the Charged Pseudo-Goldstone Bosons

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