ar X iv : h ep - p h / 99 01 25 2 v 2 2 3 M ar 1 99 9 IJS - TP - 99 / 01 TECHNION - PH - 99 - 02

Abstract

We propose the B c → B * u γ decay as the most suitable probe for the flavour changing neutral transition c → uγ. We estimate the short and long distance contributions to this decay within the standard model and we find them to be comparable; this is in contrast to radia-tive decays of D mesons, that are completely dominated by the long distance… (More)

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