Observation of chi_cJ radiative decays to light vector mesons
High Energy Physics - Experiment
2010-04-08 v2
Abstract
Using a total of 2.74 x 10^7 decays of the psi(2S) collected with the CLEO-c detector, we present a study of chi_cJ -> gamma V, where V = rho^0, omega, phi. The transitions chi_c1 -> gamma rho^0 and chi_c1 -> gamma omega are observed with B(chi_c1 -> gamma rho^0) = (2.43 +- 0.19 +- 0.22) x 10^-4 and B(chi_c1 -> gamma omega) = (8.3 +- 1.5 +- 1.2) x 10^-5. In the chi_c1 -> gamma rho^0 transition, the final state meson is dominantly longitudinally polarized. Upper limits on the branching fractions of other chi_cJ states to light vector mesons are presented.
Keywords
Cite
@article{arxiv.0807.3718,
title = {Observation of chi_cJ radiative decays to light vector mesons},
author = {CLEO Collaboration and J. V. Bennett},
journal= {arXiv preprint arXiv:0807.3718},
year = {2010}
}
Comments
10 pages, available through http://www.lns.cornell.edu/public/CLNS/