The Forward-Backward Asymmetry in the $B\to \pi {\ell }^{+}{\ell }^{-}$ Decay

Abstract

Using the most general effective Hamiltonian comprising scalar,vector and tensor type interactions, we have written the branching ratio, the forward-backward (FB) asymmetry and the normalized FB asymmetry as functions of the new Wilson coefficients. It is found that the branching ratio depends on all new coefficients,but the dependence of asymmetries on coefficients could be analyzed only for one Wilson coefficient.

arXiv comment14 pp, 7 figures

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