Two-loop QCD corrections to semileptonic b decays at an intermediate recoil
Journal Article
·
· Physical Review, D
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
- Institut fuer Theoretische Teilchenphysik, Universitaet Karlsruhe, D-76128 Karlsruhe (Germany)
We present complete O({alpha}{sub s}{sup 2}) corrections to the decay b{r_arrow}cl{nu}{sub l} at the point where the invariant mass of the leptons {radical} (q{sup 2}) equals the c quark mass. We use this result, together with previously obtained corrections at the ends of the q{sup 2} spectrum, to estimate the total width of the semileptonic b{r_arrow}c decay with O({alpha}{sub s}{sup 2}) accuracy, essential for the {vert_bar}V{sub cb}{vert_bar} determination. thinsp thinsp {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 289060
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 59; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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