Pionic couplings to the lowest heavy-light mesons of positive and negative parity
High Energy Physics - Lattice
2012-03-02 v1 High Energy Physics - Experiment
High Energy Physics - Phenomenology
Abstract
We present the method and compute the strong couplings of the lowest and first orbitally excited heavy-light mesons to a soft pion in the static heavy quark limit on the lattice. Besides the usual g^ and \~g couplings, we were able to make the first computation of the coupling h using the relevant radial distributions. Our results are obtained from the simulations of QCD with Nf=2 light Wilson-Clover quarks, combined with the improved static quark actions. The hierarchy among couplings that emerges from our study is \~g < g^ < h.
Keywords
Cite
@article{arxiv.1203.0167,
title = {Pionic couplings to the lowest heavy-light mesons of positive and negative parity},
author = {Damir Becirevic and Emmanuel Chang and Alain Le Yaouanc},
journal= {arXiv preprint arXiv:1203.0167},
year = {2012}
}
Comments
22 pages, 6 figures