QCD predictions for annihilation decays of {ital P}-wave quarkonia to next-to-leading order in {alpha}{sub {ital s}}
- CCAST (World Laboratory), Beijing 100080, People`s Republic of (China)
The decay rates of {ital P}-wave heavy quarkonia to light hadrons are presented to leading order in {ital v}{sup 2} and next-to-leading order in {alpha}{sub {ital s}}. 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 {chi}{sub {ital c}1} and {chi}{sub {ital c}2} by E760, we determine the two nonperturbative decay matrix elements, and then predict the hadronic decay rates of {chi}{sub {ital c}0} and {ital h}{sub {ital c}}, and the electromagnetic decay rates of {chi}{sub {ital c}0} and {chi}{sub {ital c}2}. The obtained decay rates of {chi}{sub {ital c}0}{r_arrow}{ital LH} and {chi}{sub {ital c}0}{r_arrow}{gamma}{gamma} are in agreement with the Crystal Ball results, and also with the new measurements by BES. However, the results for {Gamma}({chi}{sub {ital c}0}{r_arrow}{ital LH}) are dependent on the choice of renormalization scale. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 397758
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 11 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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