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preprints:1997:ttp97-06 [2016/03/17 11:03] (current)
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 +====== TTP97-06 Flavour Changing Neutral Current Decays of Heavy Baryons: The Case $\Lambda_b \to \Lambda \gamma$ ====== 
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 +   <hidden TTP97-06  Flavour Changing Neutral Current Decays of Heavy Baryons: The Case $\Lambda_b \to \Lambda \gamma$ > 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.  
 +  
 + </hidden> 
 +|**T. Mannel and S. Recksiegel **  |  
 +|** J. Phys. G: Nucl. Part. Phys. 24 979-990 1998  **  | 
 +| {{preprints:1997:ttp97-06.pdf|PDF}} {{preprints:1997:ttp97-06.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9701399|arXiv]]   | 
 +| |