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TTP97-06 Flavour Changing Neutral Current Decays of Heavy Baryons: The Case ΛbΛγ

TTP97-06 Flavour Changing Neutral Current Decays of Heavy Baryons: The Case ΛbΛγ

TTP97-06 Flavour Changing Neutral Current Decays of Heavy Baryons: The Case ΛbΛγ

We investigate the rare decay ΛbΛγ 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 ΛcΛˉν using heavy quark symmetry and a pole model. The short distance piece opens a window to new physics and we discuss the sensitivity of ΛbΛγ to such effects.

T. Mannel and S. Recksiegel
J. Phys. G: Nucl. Part. Phys. 24 979-990 1998
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