High $p_T$ Identified Particle Spectra

TL;DR

This paper reviews high transverse momentum identified particle spectra in proton-proton and heavy-ion collisions at RHIC, analyzing particle ratios, spectra, and jet composition to understand hadron production and jet quenching.

Contribution

It provides a comprehensive overview of high-$p_T$ particle spectra, including particle ratios, spectra scaling, and jet chemistry, comparing experimental data with theoretical models.

Findings

Particle ratios of various hadrons at high $p_T$ are compiled and compared.

Spectra are used to study $x_t$ scaling and compare with pQCD calculations.

Jet chemistry analysis reveals insights into quark and gluon contributions and energy loss mechanisms.

Abstract

I will present an overview of identified particle spectra at high $p_T$ ($p_T{}^{>}_{\sim}$ 5 GeV/$c$) in both p+p collisions and AA collisions at RHIC. In p+p collisions, summary of particle ratios of K, $\eta$, $\omega$, $\rho$, $\phi$, $p$, $\bar{p}$, $\Lambda$ and heavy-flavor (open charm, $J/\Psi$) to $\pi$ at high-pt will be compiled and compared to the ratios of integrated yields. The spectra are used in $x_t$ scaling study and compared to pQCD calculations. These will help us establish particle composition in jets and the quark and gluon contributions to hadron production at high $p_T$. Similar jet chemistry has been extracted in Au+Au data in search for a quantitative measure of color charge dependence of jet energy loss.