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2024年10月30日
Chinese Physics C> 2012, Vol. 36> Issue(1) : 14-24 DOI: 10.1088/1674-1137/36/1/003

The study of B→K(*)l+l- decays in family non-universal Z' models

  • In a combined investigation of B→K(*)l+l- decays, constraints on the related couplings in family non-universal Z' models are derived. We find that within the allowed parameter space, the recently observed forward-backward asymmetry in the B→K(*)l+l- decay can be explained by flipping the signs of the Wilson coefficients C9eff and C10. With the obtained constraints, we also calculate the branching ratio of the Bs→μ+μ- decay. The upper bound of our prediction is nearly an order of magnitude smaller than the upper bound given by the CDF Collaboration recently.
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  • References

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Wei Chiang, LI Run-Hui and The study of B→K(*)l+l- decays in family non-universal Z' models[J]. Chinese Physics C, 2012, 36(1): 14-24. doi: 10.1088/1674-1137/36/1/003
Wei Chiang, LI Run-Hui and The study of B→K(*)l+l- decays in family non-universal Z' models[J]. Chinese Physics C, 2012, 36(1): 14-24.  doi: 10.1088/1674-1137/36/1/003 shu
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Received: 2011-04-14
Revised: 2011-06-20
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The study of B→K(*)l+l- decays in family non-universal Z' models

  • Received Date: 2011-04-14
  • Accepted Date: 2011-06-20
  • Available Online: 2012-01-05

Abstract: In a combined investigation of B→K(*)l+l- decays, constraints on the related couplings in family non-universal Z' models are derived. We find that within the allowed parameter space, the recently observed forward-backward asymmetry in the B→K(*)l+l- decay can be explained by flipping the signs of the Wilson coefficients C9eff and C10. With the obtained constraints, we also calculate the branching ratio of the Bs→μ+μ- decay. The upper bound of our prediction is nearly an order of magnitude smaller than the upper bound given by the CDF Collaboration recently.

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