Leading order QCD corrections to the heavy to light meson transition form factor
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202 (United States)
We calculate {ital O}({alpha}{sub {ital s}}) corrections to the soft, wave-function-dependent, normalization {ital f}{sub +}(0) of the matrix element {l_angle}{pi}{vert_bar}{bar {ital q}}{gamma}{sup {mu}}{ital Q}{vert_bar}{ital B}{r_angle}. We find these corrections to be large and strongly dependent on the meson wave functions in the momentum region where propagators in the hard amplitude become soft. The findings are compared with recent results for the {ital B}{r_arrow}{pi}{ital l}{bar {nu}} branching ratio reported by CLEO. {copyright} {ital 1996 The American Physical Society.}
- DOE Contract Number:
- FG05-88ER40461; FG05-90ER40589
- OSTI ID:
- 285814
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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