Exclusive b \to s (d) ll Decays
Abstract
New BABAR measurements are presented for the exclusive rare decays B -> K(*) l+ l- including branching fractions, isospin asymmetries, direct CP violation, and lepton flavor universality for dilepton masses below and above the J/psi resonance. Unexpectedly large isospin asymmetries are observed in both K l+l- and K* l+ l- decays. For the combined K l+l- and K* l+l- data a 3.9 sigma significant deviation from the SM prediction is found. Furthermore, recent BABAR results from an angular analysis in B -> K* l+l- are reported in which both the K* longitudinal polarization and the lepton forward-backward asymmetry are measured for dilepton masses below and above the J/psi resonance. Finally, results of recent searches for B -> pi l+l- from BABAR are summarized.
Cite
@article{arxiv.0807.4076,
title = {Exclusive b \to s (d) ll Decays},
author = {G. Eigen},
journal= {arXiv preprint arXiv:0807.4076},
year = {2008}
}
Comments
14 pages, 28 figures, FPCP08 conference