Meson spectra and m_T scaling in p+p, d+Au and Au+Au collisions at \sqrtS_NN=200 GeV

Understand

The meson spectra provide insight into the particle production mechanism and interaction in the hadronic and quark gluon plasma (QGP) phases.

• The detailed study of systematics of meson spectra is important also because it acts as ingredient for estimating the hadronic decay backgrounds in the photon, single lepton and dilepton spectra which are the penetrating probes of quark gluon plasma.
• In this work, we parameterize experimentally measured pion spectra and then obtain the spectra of other light mesons using a property known as $m_T$ scaling.
• The $m_{T}$ scaled spectra for each meson is compared with experimental data for p+p, d+Au and Au+Au systems at $\surd s_{NN} $ = 200 GeV.