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Exclusive semileptonic decay of {ital D} and {ital B} mesons in the independent quark model

Journal Article · · Physical Review, D
 [1];  [2]
  1. Department of Physics, Utkal University, Bhubaneswar-751004 (India)
  2. Department of Physics, P. N. College, Khurda-752057 (India)

We investigate the exclusive semileptonic decay modes {ital D}{sup 0}{r_arrow}{ital K},{ital K}{sup {asterisk}} and {bar {ital B}}{sup 0}{r_arrow}{ital D},{ital D}{sup {asterisk}} in a field-theoretic framework based on the independent quark model with a scalar-vector-harmonic potential. Our predictions for the relevant form factors and their {ital q}{sup 2} dependence are in reasonable agreement with the expectations of HQET and those of several other models. We predict that the decay width ratio and the polarization ratio for {ital D}{sup 0} decays are {Gamma}({ital D}{sup 0}{r_arrow}{ital K}{sup {asterisk}}{sup {minus}})/{Gamma}({ital D}{sup 0}{r_arrow}{ital K}{sup {minus}})=0.68 and {Gamma}{sub {ital L}}({ital D}{sup 0}{r_arrow}{ital K}{sup {asterisk}}{sup {minus}})/{Gamma}{sub {ital T}}({ital D}{sup 0}{r_arrow}{ital K}{sup {asterisk}}{sup {minus}})=0.52 and those for {bar {ital B}}{sup 0} decays are {Gamma}({bar {ital B}}{sup 0}{r_arrow}{ital D}{sup {asterisk}}{sup +})/{Gamma}({bar {ital B}}{sup 0}{r_arrow}{ital D}{sup +})=1.87 and {Gamma}{sub {ital L}}({bar {ital B}}{sup 0}{r_arrow}{ital D}{sup {asterisk}}{sup +})/{Gamma}{sub {ital T}}({bar {ital B}}{sup 0}{r_arrow}{ital D}{sup {asterisk}}{sup +})=0.77, respectively. {copyright} {ital 1996 The American Physical Society.}

OSTI ID:
278567
Journal Information:
Physical Review, D, Journal Name: Physical Review, D Journal Issue: 3 Vol. 53; ISSN 0556-2821; ISSN PRVDAQ
Country of Publication:
United States
Language:
English

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