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arXiv · 2101.09213

Lepton polarization asymmetry in $B_(s,d)^*$ arrow ${\mu}^+ {\mu}^-$ with new Z' couplings

P. Maji·S. Mahata·S. Biswas·S. Sahoo
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Abstract

We study the effect of non-universal $Z'$ boson on the rare leptonic decay modes of $B_s^*$ mesons, mediated by $b arrow sll$ quark transition. Rare B decays are sensitive to various new physics operators. As B mesons are composite particles, such decay modes of the excited states are ideal for probing new physics beyond the standard model. We have constrained our model parameters from $B_(s,d)-$ {B bar(s,d)}$ mixing data to predict the lepton polarization asymmetry of $B_(s,d)^*$ arrow ${\mu}^+ {\mu}^-$ channel. It is found that this asymmetry deviates from its SM prediction along with the $Z'$effect

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P. Maji, S. Mahata, S. Biswas, S. Sahoo. 2021-01-22. Lepton polarization asymmetry in $B_(s,d)^*$ arrow ${\mu}^+ {\mu}^-$ with new Z' couplings. https://doi.org/10.1007/s10773-022-05118-6

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