QCD predictions for annihilation decays of P-wave quarkonia to next-to-leading order in αs
نویسندگان
چکیده
The decay rates of P-wave heavy quarkonia to light hadrons are presented to leading order in v and next-to-leading order in αs. They include contributions from both the color-singlet component and the color-octet component of quarkonia. Applying these results to charmonium and using measured decay rates for the χc1 and χc2 by E760, we determine the two nonperturbative decay matrix elements, and then predict the hadronic decay rates of χc0 and hc, and the electromagnetic decay rates of χc0 and χc2. The obtained decay rates of χc0 → LH and χc0 → γγ are in good agreement with the Crystal Ball result, and also with the new measurement by BES.
منابع مشابه
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