f0(980) and a0(980) resonances near \gamma\gamma\to K^+K^- and \gamma\gamma\to K^0\bar K^0 reaction thresholds

TL;DR

This paper investigates the properties of the f0(980) and a0(980) scalar mesons near their production thresholds in photon-photon collisions, emphasizing their potential four-quark structure and the feasibility of experimental measurements.

Contribution

It assesses the potential for measuring scalar meson contributions near thresholds in photon-photon reactions at current collider facilities.

Findings

Analysis of reaction thresholds for K+K- and K0K0bar production.

Evaluation of experimental feasibility at modern colliders.

Insights into the four-quark nature of scalar mesons.

Abstract

High-statistics data on the reactions $\gamma\gamma\to K^+K^-$ and $\gamma\gamma\to K^0\bar K^0$ are the last missing link in investigations of the light scalar mesons $f_0(980)$ and $a_0(980)$ in photon-photon collisions. It is believed that $f_0(980)$ and $a_0(980)$ resonances exhibit their four-quark structure in these reactions in a vary peculiar way. The work estimates the feasibility of measurements of scalar contributions near $\gamma\gamma\to K^+K^-$ and $\gamma\gamma\to K^0\bar K^0$ reaction thresholds at modern colliders.