The decay \phi -> f_0(980) \gamma and the process e^+e^- -> \phi f_0(980)

TL;DR

This paper analyzes the decay (980) (980) and related production processes using the Nambu-Jona-Lasinio model, emphasizing kaon loop contributions and providing predictions testable at future colliders.

Contribution

It introduces a detailed calculation of (980) production and decay within the NJL model, highlighting the dominant kaon loop effects and offering experimentally testable predictions.

Findings

Kaon loops dominate the decay (980) (980).

Estimated decay width aligns with recent experimental data.

Predicted cross sections for e^+e^- (980) production are provided.

Abstract

The decay \phi -> f_0(980) \gamma and process e^+e^- -> \phi f_0(980) are considered within the local Nambu-Jona-Lasinio model. In the amplitudes of these processes contributions of s-quark and kaon loops are taken into account. The kaon loop gives a dominant contribution. Our estimation for the decay width of \phi -> f_0 \gamma is in satisfactory agreement with recent experimental data. This allows us to make some predictions for cross sections of the process e^+e^- -> \gamma^* -> \phi f_0 which can be tested in the C-\tau factory. The total and differential cross sections of this process are calculated and presented in the figures.