Study of Bs0 → ℓ+ℓ−γ decays in a nonuniversal Z′ model

Abstract

We investigate [Formula: see text] decays in a nonuniversal [Formula: see text] model derived from the extension of the Standard Model (SM). Considering the [Formula: see text]-mediated flavor-changing neutral current (FCNC) effects, we calculate the branching ratio and forward–backward asymmetry [Formula: see text] for [Formula: see text] decay processes. We compare the obtained results with predictions of the SM and discuss the sensitivity of the observables to [Formula: see text] boson coupling parameters. We find that the branching ratios are enhanced by one order from SM predictions in [Formula: see text] model scenario. We also observe that the variation of forward–backward asymmetry with the [Formula: see text] boson coupling parameters portrays discrimination between NP effects and SM results.

Signatures of a Flavor Changing $Z'$ Boson in $B_q \to γZ'$

“…However, the resulting signatures are not completely new and some related studies have already been done before. For the radiative dilepton signatures B → γ + − , aside from the studies within the SM [27][28][29][30][31][32], new physics effects beyond the SM are also studied [33][34][35][36][37][38]. The signature of single photon plus missing energy is also studied and may be of more interest since it is related to light dark matter [22].…”