Rare Phi Decays and Exotic Hadrons

TL;DR

This paper reports experimental measurements of rare phi meson decays and discusses the potential exotic nature of certain scalar mesons based on data from the VEPP-2M collider.

Contribution

It provides new experimental data on branching ratios of rare meson decays and explores the exotic characteristics of scalar mesons f0(980) and a(980).

Findings

Measured branching ratios of nd ho, nd ecays.

Presented evidence supporting the exotic nature of f0(980) and a(980).

Analyzed reactions at VEPP-2M collider with CMD-2 and SND detectors.

Abstract

The results of the experimental study of the reactions e+e-->\pi\pi\gamma, \eta\pi\gamma, \eta'\gamma, \omega\pi,... at VEPP-2M collider with CMD-2 and SND detectors are presented. The branching ratios of \phi, \rho, \omega rare decays were measured. The problem of the possible exotic nature of f0(980), a(980) scalar mesons is discussed.