Calculation of $BR ({\bar{B}}^{0} \to Λ_{c}^{+} + \bar{p})$ in the perturbative QCD approach

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22 February 2007

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 75 (3) , 034011
DOI:10.1103/physrevd.75.034011

Abstract

We calculate the branching ratio of

{\bar{B}}^{0} \to Λ_{c}^{+} \bar{p}

in the PQCD approach. Most previous model calculations obtained branching ratios significantly larger than experimental data. We find that the predicted branching ratio for

BR ({\bar{B}}^{0} \to Λ_{c}^{+} \bar{p})

in the PQCD approach can vary over a range of

(2.3 \sim 5.1) \times 10^{- 5}

with the largest uncertainty coming from the parameters in the wave function of

Λ_{c}

. With the favored values for the parameters in the

Λ_{c}^{+}

wave function,

β = 1 GeV

and

m_{q} = 0.3 GeV

, the branching ratio is about

2.3 \times 10^{- 5}

which is satisfactorily consistent with the value measured by experiments.

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This publication has 47 references indexed in Scilit:

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Calculation ofBR(B¯0→Λc++p¯)in the perturbative QCD approach

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Calculation of $BR ({\bar{B}}^{0} \to Λ_{c}^{+} + \bar{p})$ in the perturbative QCD approach