Bs,d→μ+μ－ decays in a flavor changing Z′ model

WANG Shuai-Wei; YANG Xing-Qiang; LI Gen-Quan; HUANG Jin-Shu

doi:10.1088/1674-1137/34/5/004

Chinese Physics C> 2010, Vol. 34> Issue(5) : 539-542 DOI: 10.1088/1674-1137/34/5/004

B_s,d→μ⁺μ^－ decays in a flavor changing Z′ model

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Abstract：
We study the pure leptonic decays B_s,d→μ⁺μ^－ in a Flavor Changing Z′ Model. From the recent measurements of the branching ratios B(B_s,d→μ⁺μ^－), we have derived the bounds on the effective μ-μ-Z′ lepton coupling B_μμ^L. We find that, (i) if neglecting the contribution from the right-handed lepton coupling B_μμ^R, we obtain 1.32< B_μμ^L <3.32; (ii) if considering the contribution from the right-handed lepton coupling B_μμ^R and setting B_μμ^L=B_μμ^R, we obtain 0.99< B_μμ^L<2.19. Our results could be useful for researching Z′ effects.

References

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WANG Shuai-Wei, YANG Xing-Qiang, LI Gen-Quan and HUANG Jin-Shu. B_s,d→μ⁺μ^－ decays in a flavor changing Z′ model[J]. Chinese Physics C, 2010, 34(5): 539-542. doi: 10.1088/1674-1137/34/5/004

WANG Shuai-Wei, YANG Xing-Qiang, LI Gen-Quan and HUANG Jin-Shu. B_s,d→μ⁺μ^－ decays in a flavor changing Z′ model[J]. Chinese Physics C, 2010, 34(5): 539-542. doi: 10.1088/1674-1137/34/5/004 shu

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Received: 2009-06-30
Revised: 2009-07-03

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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

B_s,d→μ⁺μ^－ decays in a flavor changing Z′ model

Corresponding author: WANG Shuai-Wei,

Received Date: 2009-06-30

Accepted Date: 2009-07-03

Available Online: 2010-05-05

Abstract:

We study the pure leptonic decays B_s,d→μ⁺μ^－ in a Flavor Changing Z′ Model. From the recent measurements of the branching ratios B(B_s,d→μ⁺μ^－), we have derived the bounds on the effective μ-μ-Z′ lepton coupling B_μμ^L. We find that, (i) if neglecting the contribution from the right-handed lepton coupling B_μμ^R, we obtain 1.32< B_μμ^L <3.32; (ii) if considering the contribution from the right-handed lepton coupling B_μμ^R and setting B_μμ^L=B_μμ^R, we obtain 0.99< B_μμ^L<2.19. Our results could be useful for researching Z′ effects.

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B_s,d→μ⁺μ^－ decays in a flavor changing Z′ model

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通讯作者: 陈斌, bchen63@163.com

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