Study of the rare decays $B_{s,d}^{\ast }\to {\mu }^{+}{\mu }^{-}$

Abstract

We investigate the effect of scalar leptoquarks and family non-universal $Z^{\prime }$ boson on the rare leptonic decays of $B_{s,d}^{\ast }$ mesons, mediated by the FCNC transitions $b\to (d,s)l^{+}{l}^{-}$. They are sensitive to a variety of new physics operators as opposed to the $B_{s,d}$ leptonic modes and hence, can provide an ideal testing ground to look for new physics beyond the standard model. We work out the constraint on new physics parameter space using the measured branching ratios of $B_{d,s}\to {\mu }^{+}{\mu }^{-}$ processes and the $B_q-{\bar{B}}_q$ mixing data. Using the constrained parameters we estimate the branching ratios of $B_{d,s}\to {\mu }^{+}{\mu }^{-}(e^{+}{e}^{-})$ processes. We find that the branching ratios are reasonably enhanced from their corresponding standard model values in the $X(3,2,1/6)$ leptoquark model and are expected to be within the reach of Run II/III of LHC experiments.

19 pages, 1 figure

References in corpus (14)

• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Implications of lepton flavor universality violations in B decays
• Probing New Physics via the $B_s^0\to {\mu }^{+}{\mu }^{-}$ Effective Lifetime
• Current status of the Standard Model CKM fit and constraints on $\Delta F=2$ New Physics
• Branching Ratio Measurements of $B_s$ Decays
• Scalar leptoquarks and the rare B meson decays
• $B$ and $B_s$ Meson Spectroscopy
• Leptoquarks, Dark Matter, and Anomalous LHC Events
• Leptoquarks: Neutrino masses and accelerator phenomenology
• Constraints on flavor-changing Z' models by B_s mixing, Z' production, and B_s -> μ^+ μ^-
• Family Non-universal $U(1{)}^{\prime }$ Gauge Symmetries and $b\to s$ Transitions
• Minimal Flavour Violation for Leptoquarks
• Leptoquarks in FCNC charm decays
• Explaining B \to K pi anomaly with non-universal Z' boson

Cited by in corpus (3)

• Study of the rare decays $B_{(}s,d{)}^{\ast }$ arrow $l^{+}{l}^{-}$ in Z' model
• Implication of Z-mediated FCNC on semileptonic decays $B_s\to \varphi l^{+}{l}^{-}$ and $B^{+}\to K^{+}{l}^{+}{l}^{-}$
• Search for $B_{(s)}^{\ast 0}\to {\mu }^{+}{\mu }^{-}$ in $B_c^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$ decays