Search for the tensor glueball

TL;DR

This paper reports a search for the tensor glueball in BESIII data, identifying an enhancement in the $ ho o ext{pi}^0 ext{pi}^0$ mass spectrum and discussing its possible relation to high-mass tensor mesons.

Contribution

It presents the first search for the tensor glueball in radiative $J/psi$ decays and identifies a potential signal with a specific pole position.

Findings

Observed an enhancement in the $ ho o ext{pi}^0 ext{pi}^0$ invariant mass distribution.

Identified a pole at approximately 2210 MeV with a width of 360 MeV.

Speculated on the distribution of the tensor glueball among high-mass tensor mesons.

Abstract

The tensor glueball is searched for in BESIII data on radiative $J/\psi$ decays into $\pi^0\pi^0$ and $K_sK_s$. The $\pi\pi$ invariant mass distribution exhibits an enhancement that can be described by a pole at $(2210\pm 60) -i(180\pm 60)$\,MeV. We speculate if the tensor glueball could be distributed among high-mass tensor mesons.