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arXiv · 1307.5492

The Study of Rare $B_c\rightarrow D^{(*)}_{s,d}l\bar{l}$ Decays

Wan-Li Ju·Guo-Li Wang·Hui-Feng Fu·Tian-Hong Wang·Yue Jiang
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Abstract

In this paper, we study rare decays $B_c\rightarrow D^{(*)}_{s,d}l\bar{l}$ within the Standard Model. The penguin, box, annihilation, color-favored cascade and color-suppressed cascade contributions are included. Based on our calculation, the annihilation and color-favored cascade diagrams play important roles in the differential branching fractions, forward-backward asymmetries, longitudinal polarizations of the final vector mesons and leptonic longitudinal polarization asymmetries. More importantly, color-favored cascade decays largely enhance the resonance cascade contributions. To avoid the resonance cascade contribution pollution, new cutting regions are put forward.

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Wan-Li Ju, Guo-Li Wang, Hui-Feng Fu, Tian-Hong Wang, Yue Jiang. 2014-02-27. The Study of Rare $B_c\rightarrow D^{(*)}_{s,d}l\bar{l}$ Decays. https://doi.org/10.1007/jhep04(2014)065

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