Multi-Particle Decays of Light Mesons Measured by PHENIX at RHIC

TL;DR

This paper reports on measurements of light meson production in various collision systems at RHIC, revealing suppression patterns in heavy-ion collisions that inform understanding of quark-gluon plasma effects.

Contribution

It provides new experimental data on meson production and suppression in different collision systems at RHIC energies, using multiple decay channels for consistency.

Findings

No suppression observed in d+Au collisions.

Strong suppression of mesons in central Au+Au collisions.

Consistent results across different decay channels.

Abstract

The PHENIX experiment at RHIC measured K0S, eta and omega-meson production at high pT in p+p, d+Au and Au+Au collisions at sqrt(s_NN)=200 GeV. Measurements performed in different hadronic decay channels give consistent results. This paper presents measured meson-to-pi0 ratios and Nuclear Modification factors in the most central d+Au and Au+Au collisions. No suppression seen in d+Au interactions is in contrast to a strong suppression of meson yields revealed in central Au+Au collisions at the same energy.