Lattice calculation of the decays [ital B][r arrow][ital K][sup *]+[gamma] and [ital B][sub [ital s]][r arrow][phi]+[gamma]

Journal Article · Mon Mar 07 00:00:00 EST 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.1402· OSTI ID:5019226

Bernard, C; Hsieh, P; Soni, A ^[1]

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1. Department of Physics, Washington University, St. Louis, Missouri 63130 (United States) Smithsonian Astrophysical Observatory, Cambridge, Massachusetts 02138 (United States) Department of Physics, Brookhaven National Laboratory, Upton, New York, 1197 3 (United States)

A lattice calculation of the form factors that determine the hadronization ratios,'' such as [ital R][sub [ital K]][sup *] and [ital R][sub [phi]], where [ital R][sub [ital K]][sup *][equivalent to][[Gamma]([ital B][r arrow][ital K][sup *][gamma])/[Gamma]([ital b][r arrow][ital s][gamma])], is presented in the quenched approximation. Lattice data shows strong evidence for the scaling law suggested by heavy quark symmetry for one of the form factors (i.e., [ital T][sub 2]). The data also gives strong support for the simple pole ansatz for the [ital q][sup 2] dependence of [ital T][sub 2] in the range of available [ital q][sup 2]. We thus find [ital T][sub 2](0)=0.10[plus minus]0.01[plus minus]0.03, yielding [ital R][sub [ital K]][sup *]=(6.0[plus minus]1.2[plus minus]3.4)%; we also find [ital R][sub [phi]]=(6.6[plus minus]1.3[plus minus]3.7)%.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5019226
• Journal Information: Physical Review Letters; (United States), Vol. 72:10; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
RADIATIVE DECAY
LATTICE FIELD THEORY
STRANGE MESONS
STRANGEONIUM
FORM FACTORS
MOMENTUM TRANSFER
SCALING LAWS
BEAUTY PARTICLES
BOSONS
DECAY
ELEMENTARY PARTICLES
FIELD THEORIES
HADRONS
MESONS
PARTICLE DECAY
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
QUARKONIUM
STRANGE PARTICLES
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