Combined analysis of Bc→Ds(*)μ+μ− and Bc→Ds(*)νν¯ decays within Z′ and leptoquark new physics models

We investigate the exclusive rare semileptonic decays Bc→Ds(∗)(ℓℓ,νν¯) induced by neutral current transition b→s(ℓℓ,νν¯) in the presence of nonuniversal Z′, scalar and vector leptoquark new physics models. We constrain the new physics parameter space by using the latest experimental measurements of RK(∗), P5′, B(Bs→φμ+μ-) and B(Bs→μ+μ-). Throughout the analysis, we choose to work with the particular new physics scenario C9μμ(NP)=-C10μμ(NP) where both Z′, S1/33, and U-2/33 leptoquarks satisfy the condition. Using these new coupling parameters, we scrutinize the several physical observables such as differential branching fraction, the forward backward asymmetry, the lepton polarization asymmetry, the angular observable P5′, and the lepton flavor universal sensitive observables, including the ratio of branching ratio RDs(∗) and the few Q parameters in the Bc→Ds(∗)μ+μ- and Bc→Ds(∗)νν¯ decay processes. © 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "http://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3