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Study of the semileptonic decays B->pi, D->pi and D->K

C. Albertus·J. M. Flynn·E. Hernandez·J. Nieves·J. M. Verde-Velasco
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Abstract

The semileptonic decay B->pi is studied starting from a simple quark model that takes into account the effect of the B* resonance. A novel, multiply subtracted, Omnes dispersion relation has been implemented to extend the predictions of the quark model to all q^2 values accesible in the physical decay. By comparison to the experimental data, we extract |V_ub|=0.0034 +/- 0.0003(exp.) +/- 0.0007(theory). As a further test of the model, we have also studied D->pi and D->K decays for which we get good agreement with experiment.

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C. Albertus, J. M. Flynn, E. Hernandez, J. Nieves, J. M. Verde-Velasco. 2006-10-05. Study of the semileptonic decays B->pi, D->pi and D->K. https://doi.org/10.1140/epja%2Fi2006-10247-9

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