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preprints:1997:ttp97-31 [2016/03/17 11:03] (current)
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 +====== TTP97-31 Calculation of the semileptonic decay width of the $\Lambda_b$ baryon ====== 
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 +   <hidden TTP97-31  Calculation of the semileptonic decay width of the $\Lambda_b$ baryon > We extend the approach based on the light-cone expansion and the heavy quark  
 + effective theory to the inclusive semileptonic decay of an unpolarized 
 + $b$-flavored hadron. It is applied to calculate the semileptonic decay width 
 + of the $\Lambda_b$ baryon and its ratio to that of the $B$ meson. We obtain 
 + $\Gamma_{\rm SL}(\Lambda_b)= 51\pm 9 \ |V_{cb}|^2\mbox{ps}^{-1}$ and 
 + $\Gamma_{\rm SL}(\Lambda_b)/\Gamma_{\rm SL}(B)= 1.052\pm 0.006$. 
 + From the latter, the semileptonic branching fraction for $\Lambda_b$ is  
 + predicted  
 + to be $(8.7\pm 0.7)\%$.  
 + </hidden> 
 +|**Changhao Jin **  |  
 +|** Phys. Rev. D56 7267-7272 1997  **  | 
 +| {{preprints:1997:ttp97-31.pdf|PDF}} {{preprints:1997:ttp97-31.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9709457|arXiv]]   | 
 +| |