Hard Probes are the "Meridian Line", sQGP is the Forbidden City

TL;DR

This paper reviews how hard probes like jets and high transverse momentum particles reveal properties of the strongly interacting Quark-Gluon Plasma created in relativistic heavy-ion collisions at RHIC, emphasizing three-particle correlation results.

Contribution

It provides a comprehensive review of jet-like correlation measurements, especially three-particle correlations, to understand sQGP properties and medium responses.

Findings

Jet modifications reveal sQGP characteristics

Three-particle correlations uncover collective medium responses

Energy loss mechanisms are characterized through correlation studies

Abstract

Relativistic heavy-ion collisions at BNL/RHIC have created a hot and dense nuclear matter, the strongly interacting Quark-Gluon Plasma (sQGP). Hard probes, high transverse momentum particles and jets, interact with the sQGP medium and lose energy. The interactions modify the properties of the hard probes; the medium responds to the energy loss of those probes in a collective way. Many properties of the sQGP have been learned from the modifications to the probes and the medium responses. I will review jet-like correlation results from RHIC, especially those measured by three-particle correlations, and discuss some of the fascinating physics.