Chiral loop and LsigmaM predictions for phi->pi0etagamma

Details Chiral loop and LsigmaM predictions for phi->pi0etagamma Chiral loop and LsigmaM predictions for phi->pi0etagamma

2000-12-05

arxiv.org/abs/hep-ph/0012050v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures. Talk given at the Hadron Structure'2000 Conference, Stara Lesna, High Tatras Mountains, Slovakia, 2-7 Oct

Scientific paper

A prediction for the contributions of chiral loops and the L$\sigma$M model to the radiative $\phi\to\pi^0\eta\gamma$ decay mode is presented. The L$\sigma$M is used as an appropriate framework for describing the pole effects of the $a_0(980)$ scalar resonance. As a result, a better agreement with present available data is achieved for the higher part of the $\pi^0\eta$ invariant mass spectrum. For the branching ratio, a value of $B(\phi\to\pi^0\eta\gamma)=(0.75$--$0.95)\times 10^{-4}$ is found.

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