Semileptonic Decays of Pseudoscalar Mesons: A New Approach
High Energy Physics - Phenomenology
2013-04-15 v1
Abstract
Because quarks in hadronic states are subjected to strong QCD forces, it is not straight-forward to apply calculation obtained at the quark level to physical processes involving hadrons. In this paper we present a new approach to treat the semileptonic decays of pseudoscalar mesons. At the quark level, the process is straightforward. However, when we fold the quark-level process to the meson decay process, the complication from QCD effects come in. We make the fundamental assumption that the vertex of type M-q-qbar can be approximated by an effective constant gamma-5 coupling. With this assumption, the hadronic process can then be related to the quark-level process. The model is applied to the semileptonic decays of pi, K, D and B mesons.
Keywords
Cite
@article{arxiv.1303.5825,
title = {Semileptonic Decays of Pseudoscalar Mesons: A New Approach},
author = {Swee Ping Chia},
journal= {arXiv preprint arXiv:1303.5825},
year = {2013}
}