Connections between inclusive and exclusive semileptonic B decay

Journal Article · Sat Mar 15 04:00:00 EST 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.53254· OSTI ID:21165604

Wise, Mark B ^[1]

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1. California Institute of Technology, Pasadena, California 91125 (United States)

B decay sum rules relate exclusive B semileptonic decay matrix elements to forward B-meson matrix elements of operators in HQET. At leading order the operators that occur are the b-quark kinetic energy {lambda}{sub 1} and chromomagnetic energy {lambda}{sub 2}. The latter is determined by the measured B*-B mass splitting. The derivation of these sum rules is reviewed and perturbative QCD corrections are discussed. A determination of {lambda}{sub 1} and the energy of the light degrees of freedom in a B-meson, {lambda}-bar, from semileptonic B decay data is presented. Future prospects for improving these sum rules are discussed.

• OSTI ID: 21165604
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 400; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILAMBDA PARTICLES
B MESONS
B QUARKS
CORRECTIONS
DEGREES OF FREEDOM
EXCLUSIVE INTERACTIONS
FIELD OPERATORS
MATRIX ELEMENTS
PERTURBATION THEORY
QUANTUM CHROMODYNAMICS
REST MASS
SEMILEPTONIC DECAY
SUM RULES