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Quark model study of the semileptonic B -> pi decay

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 and taking into account the effect of the B* resonance. A novel, multiply subtracted, Omnès dispersion relation has been implemented to extend the predictions of the quark model to all physical q^2 values. We find |V_{ub}|=0.0034 +/- 0.0003(exp.)+/- 0.0007(theory), in good agreement with experiment.

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C. Albertus, J. M. Flynn, E. Hernandez, J. Nieves, J. M. Verde--Velasco. 2006-10-18. Quark model study of the semileptonic B -> pi decay. https://doi.org/10.1063/1.2714403

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