From RHIC to LHC

TL;DR

This paper reviews measurements of particle yields at RHIC, discusses interpretation challenges like suppression patterns, and explores correlation techniques and partonic effects to better understand quark-gluon plasma phenomena.

Contribution

It introduces the potential of two-particle and prompt photon correlation techniques to address open questions in high-energy nuclear collisions.

Findings

Suppression patterns of light and heavy quarks are similar.

Partonic transverse momentum influences prompt-photon correlations.

Smearing effects at LHC energies affect photon-jet correlations.

Abstract

Measurements of the nuclear modification factor of inclusive yields of $\pi^0$, $p\bar{p}$, non-phtonic electrons and prompt photon measured at RHIC are reviewed. Some of the difficulties arising from interpretation of these measurements such as similarity of the suppression pattern of light and heavy quarks, quarks and gluons, light quarks and prompt photon are discussed. The potential of two-particle and promt photon correlation technique to unravel some of these open questions is presented. An emphasis is given to the influence of partonic transverse momentum on the prompt-photon correlations. The smearing between the trigger photon and back-to-back jet at LHC energy is discussed.