Measurement of light mesons at RHIC by the PHENIX experiment

Abstract

Abstract. The PHENIX experiment at RHIC has measured a variety of light neutral mesons (π 0 , K 0 S , η, ω, η ′ , φ) via multi-particle decay channels over a wide range of transverse momentum. A review of the recent results on the production rates of light mesons in p+p and their nuclear modification factors in d+Au, Cu+Cu and Au+Au collisions at different energies is presented.

Detailed measurement of the e+e- pair continuum in p+p and Au+Au collisions at sqrt(s_NN)=200 GeV and implications for direct photon production

“…However we have observed a different trend (i.e. a smaller suppression) for strange particles and η has a strangeness content too [69,70]. Therefore, since the η cannot be measured at low-p T , we take as systematic uncertainty in the low-p T region (and consequently on the extrapolated dN/dy), the difference of the two spec- tra (∼ 30%) in the low-p T range.…”