The annihilation decays $B^-_c \to η^{'}(η,π^0) l^- \barν$

Details The annihilation decays $B^-_c \to η^{'}(η,π^0) l^- \barν$ The annihilation decays $B^-_c \to η^{'}(η,π^0) l^- \barν$

2006-05-03

arxiv.org/abs/hep-ph/0605037v3

Phys.Rev.D73:094010,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 1 figures. To be appeared in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.73.094010

We investigate the simileptonic OZI-forbidden annihilation decays $B^-_c \to \eta^{'}(\eta ,\pi^0) l^- \bar{\nu}$ for $l=\mu,e$ in the perturbative QCD, and carry out a precise calculation without any approximation for the one-loop contributions, which involves integrals of 4- and 5-point loop functions. Our results show that the branching ratios of decays $B^-_c \to \eta^{'} l^- \bar{\nu}$, $B^-_c \to \eta l^- \bar{\nu}$ and $B^-_c \to \pi^0 l^- \bar{\nu}$, turn out to be of orders $10^{-4}$, $10^{-5}$ and $10^{-6}$, respectively, which could be observable in the future experiments at the LHC.

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