A study of B->X(3872) K, with X(3872)->J/Psi pi+ pi-
High Energy Physics - Experiment
2010-04-12 v1
Abstract
We present measurements of the decays B+ -> X(3872) K+ and B0 -> X(3872) K0 with X(3872) -> Jpsi pi+ pi-. The data sample used, collected with the BABAR detector at the PEP-II e+e- asymmetric-energy storage ring, corresponds to 455 x 10^6 BBbar pairs. Branching fraction measurements of BF(B+ -> X(3872) K+) x BF(X(3872) -> Jpsi pi+ pi-) = (8.4 +/- 1.5 +/- 0.7) x 10^{-6} and BF(B0 -> X(3872) K0) x BF(X(3872) -> Jpsi pi+ pi- = (3.5 +/- 1.9 +/- 0.4) x 10^{-6} are obtained. We set an upper limit on the natural width of the X(3872) of Gamma < 3.3 MeV/c^2 at the 90% confidence level.
Keywords
Cite
@article{arxiv.0803.2838,
title = {A study of B->X(3872) K, with X(3872)->J/Psi pi+ pi-},
author = {The BABAR Collaboration and B. Aubert},
journal= {arXiv preprint arXiv:0803.2838},
year = {2010}
}
Comments
7 pages, 2 postscript figures, submitted to Phys. Rev. D (Rapid Communications)