Phenomenology of the 1/{ital m}{sub {ital Q}} expansion in inclusive {ital B} and {ital D} meson decays

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.53.6316· OSTI ID:284577

Falk, A F ^[1]; Luke, M ^[2]; Savage, M J ^[3]

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1. Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218 (United States)
2. Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario, M5S 1A7 (CANADA)
3. Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States)

We apply a recent theoretical analysis of hadronic observables in inclusive semileptonic heavy hadron decays to the phenomenology of {ital B} and {ital D} mesons. Correlated bounds on the nonperturbative parameters {bar {Lambda}} and {lambda}{sub 1} are derived by considering data from {ital B} decays and, independently, data from {ital D} decays. The two sets of bounds are found to be consistent with each other. The data from {ital B} decays then are used to extract a lower limit on the CKM matrix element {parallel}{ital V}{sub {ital cb}}{parallel}. We address the issue of the convergence of the perturbative expansions used in the analysis, and compare our bounds on {bar {Lambda}} and {lambda}{sub 1} to lattice and QCD sum rule results. Finally, we argue that a comparison of the analyses of {ital D} and {ital D}{sub {ital s}} decays provides evidence for the applicability of parton-hadron duality in the semileptonic decay of charmed hadrons. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Carnegie-Mellon University
• DOE Contract Number: FG02-91ER40682; FG02-94ER40869
• OSTI ID: 284577
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 11 Vol. 53; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
B MESONS
CHARM PARTICLES
CONVERGENCE
D MESONS
DUALITY
EXPANSION
KOBAYASHI-MASKAWA MATRIX
MATRIX ELEMENTS
QUANTUM CHROMODYNAMICS
SEMILEPTONIC DECAY
SUM RULES