Study of the semileptonic decays B->pi, D->pi and D->K
High Energy Physics - Phenomenology
2008-11-26 v1
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.
Cite
@article{arxiv.hep-ph/0610062,
title = {Study of the semileptonic decays B->pi, D->pi and D->K},
author = {C. Albertus and J. M. Flynn and E. Hernandez and J. Nieves and J. M. Verde-Velasco},
journal= {arXiv preprint arXiv:hep-ph/0610062},
year = {2008}
}
Comments
3 pages, 5 figures. Talk given at the IV International Conference on Quarks and Nuclear Physics (QNP06), Madrid, June 5th - 10th 2006