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arXiv · 1303.5825

Semileptonic Decays of Pseudoscalar Mesons: A New Approach

Swee Ping Chia
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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.

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Swee Ping Chia. 2013-03-23. Semileptonic Decays of Pseudoscalar Mesons: A New Approach. https://arxiv.org/abs/1303.5825

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