B_c meson rare decays in the light-cone quark model

Abstract

We investigate the rare decays $B_c\to D_s(1968)\ell \bar{\ell }$ and $B_c\to D_s^{\ast }(2317)\ell \bar{\ell }$ in the framework of the light-cone quark model (LCQM). The transition form factors are calculated in the space-like region and then analytically continued to the time-like region via exponential parametrization. The branching ratios and longitudinal lepton polarization asymmetries (LPAs) for the two decays are given and compared with each other. The results are helpful to investigating the structure of $B_c$ meson and to testing the unitarity of CKM quark mixing matrix. All these results can be tested in the future experiments at the LHC.

9 pages, 11 figures, version accepted for publication in EPJC

References in corpus (8)

• Melosh rotation: source of the proton's missing spin
• $B_c$ to P-Wave Charmonia Transitions in Covariant Light-Front Approach
• Measurement of the Decay B_s^0 -> D_s^- pi^+ and Evidence for B_s^0 -> D_s^{+/-} K^{-/+} in e+e- Annihilation at sqrt(s)~10.87 GeV
• Production of $B_c$ or ${\bar{B}}_c$ meson and its excited states via $\bar{t}$-quark or $t$-quark decays
• Analysis of the rare semileptonic $B_c \rar P(D,D_s) l^{+}l^{-}/ν\barν$ decays within QCD sum rules
• Light-front quark model analysis of the exclusive rare $B_c\to D_{(s)}({\ell }^{+}{\ell }^{-},{\nu }_{\ell }{\bar{\nu }}_{\ell })$ decays
• First observation of the decay Bs --> Ds K and measurement of the ratio of branching fractions Br(Bs --> DsK)/Br(Bs --> Ds pi)
• Zero-Mode Contribution in Nucleon-Delta Transition

Cited by in corpus (6)

• Heavy quarkonium 2S states in light-front quark model
• The rare semi-leptonic $B_c$ decays involving orbitally excited final mesons
• Study of Bc-> D_s^* \ell^+ \ell^- in Single Universal Extra Dimension
• The Study of Rare $B_c\to D_{s,d}^{(\ast )}l\bar{l}$ Decays
• Study of rare semileptonic $B_c^{+}\to D^{+}\nu \bar{\nu }$ decay in the light-cone quark model
• Weak Annihilation Contribution to Angular Observables in $B_c^{+}\to D^{\ast +}{\ell }^{+}{\ell }^{-}$ Decays