QCD radiative correction to the hadronic annihilation rate of 1{sup +{minus}} heavy quarkonium
- China Center of Advanced Science and Technology (World Laboratory), Beijing 100080, People`s Republic of (China)
The hadronic annihilation rate of 1{sup +{minus}} heavy quarkonium is given to next-to-leading order in {alpha}{sub {ital s}} and leading order in {ital v}{sup 2} using a recently developed factorization formalism which is based on NRQCD. The result includes both the annihilation of the {ital P}-wave color-singlet {ital Q{bar Q}} component, and the annihilation of the {ital S}-wave color-octet {ital Q{bar Q}} component of the quarkonium. The notorious infrared divergences due to soft gluons, i.e., the logarithms associated with the binding energy, encountered in previous perturbative calculations of 1{sup +{minus}} quarkonium decays, are found to be explicitly canceled, and a finite result for the decay width to order {alpha}{sup 3}{sub {ital s}} is then obtained. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 383367
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 5 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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