Study of a^0_0(980)-f_0(980) mixing at BESIII

TL;DR

This paper reports direct measurements of the mixing between the scalar mesons a0(980) and f0(980) using large datasets from BESIII, providing insights into their nature and interactions.

Contribution

First direct measurement of a0(980)-f0(980) mixing at BESIII using specific decay processes with large data samples.

Findings

Observed mixing signals in specified decay channels.

Quantified the mixing intensity between a0(980) and f0(980).

Enhanced understanding of scalar meson structure.

Abstract

In this talk,we present direct measurements of $a^{0}_{0}(980)-f_{0}(980)$ mixing in the processes $J/\psi\to\phi f_{0}(980)\to\phi a^{0}_{0}(980)\to\phi\eta\pi^{0}$ and $\psi^{\prime}\to\gamma\chi_{c1},\chi_{c1}\to\pi^{0} a^{0}_{0}(980)\to\pi^{0} f_{0}(980)\to\pi^{0}\pi^{+}\pi^{-}$ with $2.25 \times 10^{8}$ $J/\psi$ data and $1.06 \times 10^{8}$ $\psi^{\prime}$ data at BESIII.