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Flavour Changing Neutral Current Decays of Heavy Baryons: The Case $Λ_b \to Λγ$

T. Mannel·S. Recksiegel
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Abstract

We investigate the rare decay $Λ_b \to Λγ$ 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 $Λ_c \to Λ\ell \barν_\ell$ using heavy quark symmetry and a pole model. The short distance piece opens a window to new physics and we discuss the sensitivity of $Λ_b \to Λγ$ to such effects.

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T. Mannel, S. Recksiegel. 1997-01-28. Flavour Changing Neutral Current Decays of Heavy Baryons: The Case $Λ_b \to Λγ$. https://doi.org/10.1088/0954-3899%2F24%2F5%2F006

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