%0 Journal Article
%T Nonperturbative corrections to B -> X_s l^+ l^- with phase space restrictions
%A Christian W. Bauer
%A Craig N. Burrell
%J Physics
%D 1999
%I arXiv
%R 10.1016/S0370-2693(99)01259-9
%X We study nonperturbative corrections up to O(1/m_b^3) in the inclusive rare B decay B -> X_s l^+ l^- by performing an operator product expansion. The values of the matrix elements entering at this order are unknown and introduce uncertainties into physical quantities. Imposing a phase space cut to eliminate the $c \bar{c}$ resonances we find that the O(1/m_b^3) corrections introduce an O(10%) uncertainty in the measured rate. We also find that the contributions arising at O(1/m_b^3) are comparable to the ones arising at O(1/m_b^2) over the entire region of phase space.
%U http://arxiv.org/abs/hep-ph/9907517v1