摘要
We study, using a Monte Carlo approach, the rare decay (Formula presented) including the effects of the arbitrariness of the phase between the (Formula presented) amplitudes and the perturbative amplitude, b-quark Fermi motion inside the B meson, and experimental smearing of lepton momenta. We find that such effects reduce the sensitivities of the spectra of invariant mass and forward-backward asymmetry of the lepton pair to new physics, especially in the neighborhood of the (Formula presented) resonances. We also estimate the sensitivity range of the Wilson coefficients with respect to the uncertainties. © 1999 The American Physical Society.