English

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

High Energy Physics - Phenomenology 2016-01-13 v4
Authors: 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 Bc→Ds,d(∗)llˉB_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.

Keywords

rare B_c decays penguin diagrams box diagrams annihilation diagrams cascade decays branching fractions forward-backward asymmetries polarizations

Cite

@article{arxiv.1307.5492,
  title  = {The Study of Rare $B_c\rightarrow D^{(*)}_{s,d}l\bar{l}$ Decays},
  author = {Wan-Li Ju and Guo-Li Wang and Hui-Feng Fu and Tian-Hong Wang and Yue Jiang},
  journal= {arXiv preprint arXiv:1307.5492},
  year   = {2016}
}

Comments

34 pages, 13 figures

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