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preprints:1997:ttp97-38 [2016/03/17 11:03] (current)
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 +====== TTP97-38 Probing the helicity structure of $b\to s\gamma$ in $\Lambda_b \to \Lambda \gamma$ ====== 
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 +   <hidden TTP97-38  Probing the helicity structure of $b\to s\gamma$ in $\Lambda_b \to \Lambda \gamma$ > We investigate the rare decay $\Lambda_b \to \Lambda \gamma$ which receives 
 + both short and long distance contributions. We estimate the long distance 
 + contributions and find them very small. The form factors are obtained 
 + from $\Lambda_c \to \Lambda \ell \bar{\nu}_\ell$ using heavy quark symmetry 
 + and a pole model. The short distance piece opens a window to new physics 
 + and we discuss the sensitivity of  $\Lambda_b \to \Lambda \gamma$ 
 + to such effects. 
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 + </hidden> 
 +|**Thomas Mannel and Stefan Recksiegel**  |  
 +|** Acta Phys. Polon. B28 2489-2493 1997  **  | 
 +| {{preprints:1997:ttp97-38.pdf|PDF}} {{preprints:1997:ttp97-38.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9710287|arXiv]]   | 
 +| |