Affordable Access

deepdyve-link
Publisher Website

Precise predictions for B -> Xs l+ l- in the large q^2 region

Authors
  • Ligeti, Zoltan
  • Tackmann, Frank J.
Type
Published Article
Publication Date
Sep 05, 2007
Submission Date
Jul 12, 2007
Identifiers
DOI: 10.1016/j.physletb.2007.07.070
Source
arXiv
License
Unknown
External links

Abstract

The inclusive B -> Xs l+ l- decay rate in the large q^2 region (q^2 > m_{\psi'}^2) receives significant nonperturbative corrections. The resulting uncertainties can be drastically reduced by normalizing the rate to the B -> Xu l nu rate with the same q^2 cut, which allows for much improved tests of short distance physics. We calculate this ratio, including the order 1/m_b^3 nonperturbative corrections and the analytically known NNLO perturbative corrections. Since in the large q^2 region an inclusive measurement may be feasible via a sum over exclusive states, our results could be useful for measurements at LHCb and possibly for studies of B -> Xd l+ l-.

Report this publication

Statistics

Seen <100 times