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arXiv · 0807.3718

Observation of chi_cJ radiative decays to light vector mesons

CLEO Collaboration·J. V. Bennett
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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.

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CLEO Collaboration, J. V. Bennett. 2008-10-08. Observation of chi_cJ radiative decays to light vector mesons. https://doi.org/10.1103/physrevlett.101.151801

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