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

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WANG Shuai-Wei, YANG Xing-Qiang, LI Gen-Quan and HUANG Jin-Shu. Bs,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. Bs,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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Bs,d→μ+μ decays in a flavor changing Z′ model

    Corresponding author: WANG Shuai-Wei,

Abstract: 

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

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