Rare radiative decays of the $B_c$ meson

Abstract

In this paper, we study the rare radiative processes $B_c\to D_{sJ}^{(\ast )}\gamma$ within the Standard Model, where $D_{sJ}^{(\ast )}$ stands for the meson $D_s^{\ast }$,~$D_{s1}(2460,2536)$ or ~$D_{s2}^{\ast }(2573)$. During the investigations, we consider the contributions from the penguin, annihilation, color-suppressed and color-favored cascade diagrams. Our results show that: 1) the penguin and annihilation contributions are dominant in the branching fractions; 2) for the processes $B_c\to D_s^{\ast }\gamma$ and $B_c\to D_{s1}(2460,2536)\gamma$, the effects from the color-suppressed and color-favored cascade diagrams are un-negligible.

References in corpus (5)

• Exclusive semileptonic and nonleptonic decays of the Bc meson
• Decay constants of $P$-wave mesons
• CP asymmetry, branching ratios and isospin breaking effects of B -> K* gamma with the perturbative QCD approach
• Weak decays of ${\bar{B}}_s$ mesons
• QCD sum rules analysis of the rare radiative Bc -> D*_s gamma decay

Cited by in corpus (1)

• Study of the dilepton electromagnetic decays of ${\chi }_{cJ}(1P)$