Exotica possibility of new observations by BES

TL;DR

This paper uses QCD sum rules and quark models to predict masses of glueballs and tetraquarks, discussing the potential for new exotic observations by BES in particle physics.

Contribution

It introduces a combined approach of QCD sum rules and constituent quark models to estimate masses of exotic hadrons, exploring their observability.

Findings

Masses of lowest scalar and pseudo-scalar glueballs determined.

Masses of tetraquark states and their excitations estimated.

Discussion on the exotica possibility of new BES observations.

Abstract

The employment of interpolating currents of existed studies of four-quark state and glueball with QCD sum rule approach is analyzed. In terms of suitable currents, the masses of the lowest lying scalar and pseudo-scalar glueball were determined. The masses of some tetraquark states and their first orbital excitations were obtained through a combination of the sum rule with the constituent quark model. Exotica possibility of the new observations by BES is discussed.