Significance of Single Pion Exchange Inelastic Final State Interaction for D->VP Processes

Abstract

We evaluate the contribution of the final state interaction (FSI) due to single pion exchange inelastic scattering for $D^{+}\to {\bar{K}}^{0\ast }{\pi }^{+}$ and $D^{+}\to {\bar{K}}^0{\rho }^{+}$ processes. The effects are found to be very significant. The hadronic matrix elements of the weak transition are calculated in terms of the heavy quark effective theory (HQET), so are less model-dependent and more reliable.

12 pages + 1 postscript figure

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