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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We study the pure leptonic decaysB_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^Rand 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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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

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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 decaysB_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^Rand 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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