Estimating the I=3/2 K pi interaction in D decay

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  • 13 June 2005
Abstract
Heavy flavour decay to light hadrons is the key to understanding many aspects of the Standard Model from CP violation to strong dynamics. It is often presumed in line with the simple quark spectator model of D decay to K pi pi that the K-pi system has only I=1/2. We show how recent analysis of the E791 results on this decay allows us to estimate the I=3/2 component using Watson's theorem. We deduce that this I=3/2 component is larger than in hadronic scattering or semileptonic processes.

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