Perturbative O({alpha}{sub s}{sup 2}) corrections to the hadronic cross section near heavy quark-antiquark thresholds in e{sup +}e{sup {minus}} annihilation
- Department of Physics, University of California, San Diego, La Jolla, California 92093-0319 (United States)
It is demonstrated how perturbative O({alpha}{sub s}{sup 2}) relativistic corrections to the nonrelativistic stable heavy quark-antiquark production cross section in e{sup +}e{sup {minus}} annihilation based on a Coulombic QCD potential can be systematically calculated using the concept of effective field theories. The O({alpha}{sub s}{sup 2}) corrections from the relativistic energy-momentum relation, the relativistic phase space corrections and the O({alpha}{sub s}{sup 2}) corrections involving the group theoretical factors C{sub F}{sup 2} and C{sub F}T are determined explicitly. For the case of t{bar t} production the sum of these corrections amounts to 3{percent}{endash}7{percent} over the whole threshold regime and is insensitive to variations in the top width. Perturbative O({alpha}{sub s}{sup 2}) corrections to the leptonic decay width of heavy quark-antiquark {sup 3}S{sub 1} vector resonances are extracted. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 543913
- Journal Information:
- Physical Review, D, Vol. 56, Issue 9; Other Information: PBD: Nov 1997
- Country of Publication:
- United States
- Language:
- English
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