On the Mechanism of Open-Flavor Strong Decays

Authors
Type
Published Article
Publication Date
Apr 18, 1996
Submission Date
Apr 18, 1996
Identifiers
DOI: 10.1103/PhysRevD.54.6811
arXiv ID: hep-ph/9604355
Source
arXiv
License
Unknown
External links

Abstract

Open-flavor strong decays are mediated by $q\bar q$ pair production, which is known to occur dominantly with \3p0 quantum numbers. The relation of the phenomenological \3p0 model of these decays to microscopic" QCD decay mechanisms has never been clearly established. In this paper we investigate $q\bar q$ meson decay amplitudes assuming pair production from the scalar confining interaction (sKs) and from one gluon exchange (OGE). sKs pair production predicts decay amplitudes of approximately the correct magnitude and D/S amplitude ratios in $b_1\to\omega\pi$ and $a_1\to\rho\pi$ which are close to experiment. The OGE decay amplitude is found to be subdominant in most cases, a notable exception being $^3$P$_0\to{}^1$S$_0+{}^1$S$_0$. The full sKs~+~OGE amplitudes differ significantly from \3p0 model predictions in some channels and can be distinguished experimentally, for example through an accurate comparison of the D/S amplitude ratios in $b_1\to\omega\pi$ and $a_1\to\rho\pi$.

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