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Meson PVV Interations are Determined by Quark Loops

journal contribution
posted on 2023-05-16, 11:44 authored by Robert DelbourgoRobert Delbourgo, Liu, DS, Scadron, MD
We show that all abnormal parity three-body meson interactions can be adequately described by quark loops, evaluated at zero external momentum, with couplings determined by U(Nf) symmetry. We focus primarily on radiative meson decays which involve one pseudoscalar. The agreement with experiment for nonrare decays is surprisingly good and requires very few parameters, namely the coupling constants gπqq and gpqq and some mixing angles. This agreement extends to some three-body decays that are dominated by pion pairs in a P-wave state.

History

Publication title

International Journal of Modern Physics A

Volume

14

Issue

27

Pagination

4331-4345

ISSN

0217-751X

Department/School

School of Natural Sciences

Publisher

World Scientific Publishing Company

Place of publication

Singapore

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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