New effects observed in central production by the WA102 experiment at the CERN Omega Spectrometer

TL;DR

This paper reports on the WA102 experiment's findings that meson production in central collisions varies with transverse momentum differences and azimuthal angles, revealing suppression of qqbar mesons and enhancement of glueball candidates.

Contribution

It introduces new observations on how meson production depends on transverse momentum differences and azimuthal angles, highlighting distinctions between qqbar mesons and glueball candidates.

Findings

qqbar mesons are suppressed at small dPT

glueball candidates are enhanced at small dPT

production cross section varies with 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. In addition, the production cross section for different resonances depends strongly on the azimuthal angle between the two outgoing protons.