Constraints on the form factors for K --> pi l nu and implications for V_us
High Energy Physics - Phenomenology
2008-11-26 v2 High Energy Physics - Experiment
Abstract
Rigorous bounds are established for the expansion coefficients governing the shape of semileptonic K-->pi form factors. The constraints enforced by experimental data from tau-->K pi nu eliminate uncertainties associated with model parameterizations in the determination of |V_us|. The results support the validity of a powerful expansion that can be applied to other semileptonic transitions.
Cite
@article{arxiv.hep-ph/0607108,
title = {Constraints on the form factors for K --> pi l nu and implications for V_us},
author = {Richard J. Hill},
journal= {arXiv preprint arXiv:hep-ph/0607108},
year = {2008}
}
Comments
5 pages, 3 figures; references added, version to appear in Phys. Rev. D alongside hep-ex/0608058