A glueball-qqbar filter in central production

TL;DR

This paper investigates how central meson production varies with transverse momentum differences and azimuthal angles, revealing patterns that distinguish qqbar mesons from glueball candidates, aiding in identifying gluonic states.

Contribution

It introduces a filter based on transverse momentum difference and azimuthal angle to differentiate between qqbar mesons and glueball candidates in central production.

Findings

qqbar mesons are suppressed at small dPT

glueball candidates are enhanced at small dPT

production cross sections depend on azimuthal angle

Abstract

A study of central meson production as a function of the difference in transverse momentum (dPT) of the exchanged particles shows that undisputed qqbar mesons are suppressed at small dPT whereas the glueball candidates are enhanced and that the production cross section for different resonances depends strongly on the azimuthal angle between the two outgoing protons.