Application of HQET to {ital B}{r_arrow}{ital K}{sup ({asterisk})} transitions

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.53.3643· OSTI ID:281663

Roberts, W ^[1]; Ledroit, F ^[1]

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1. Institut des Sciences Nucleaires, 53 avenue des Martyrs, 38026 Grenoble (France)

We examine the measured rates for the decays {ital D}{r_arrow}{ital K}{sup ({asterisk})}{ital l}{nu}, {ital B}{r_arrow}{ital K}{sup ({asterisk})}{psi}{sup ({prime})}, and {ital B}{r_arrow}{ital K}{sup {asterisk}}{gamma} in a number of scenarios in the framework of the heavy quark effective theory. We attempt to find a scenario in which all of these decays are described by a single set of form factors. Once such a scenario is found, we make predictions for the rare decays {ital B}{r_arrow}{ital K}{sup ({asterisk})}{ital l}{sup +}{ital l}{sup {minus}}. While we find that many scenarios can provide adequate descriptions of all the data, somewhat surprisingly, we observe that two popular choices of form factors, namely, monopolar forms and exponential forms, exhibit some shortcomings, especially when confronted with polarization observables. We predict B({bar {ital B}}{sup 0}{r_arrow}{bar {ital K}}{sup 0}{mu}{sup +}{mu}{sup {minus}})=6.4{plus_minus}1.0{times}10{sup {minus}7} and B({bar {ital B}}{sup 0}{r_arrow}{bar {ital K}}{sup {asterisk}0}{mu}{sup +}{mu}{sup {minus}})=3.8{plus_minus}1.3{times}10{sup {minus}6}. We also make predictions for polarization observables in these decays. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Thomas Jefferson National Accelerator Facility
• DOE Contract Number: AC05-84ER40150; FG05-94ER40832
• OSTI ID: 281663
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 7 Vol. 53; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
B MESONS
D MESONS
FORM FACTORS
GAMMA DECAY
K*-892 MESONS
POLARIZATION
QUARK MODEL
QUARKS
SEMILEPTONIC DECAY
WEAK HADRONIC DECAY