Selected Experimental Results from Heavy Ion Collisions at LHC

TL;DR

This paper reviews experimental results from heavy-ion collisions at the LHC, highlighting consistency across experiments and comparing findings to RHIC data to infer properties of the quark-gluon plasma.

Contribution

It provides a comprehensive comparison of LHC heavy-ion collision measurements with RHIC results, offering new insights into the properties of the created matter.

Findings

Higher energy density at LHC compared to RHIC

Larger system size and longer lifetime at LHC

Consistent experimental results across LHC experiments

Abstract

We review a subset of experimental results from the heavy-ion collisions at the Large Hadron Collider (LHC) facility at CERN. Excellent consistency is observed across all the experiments at the LHC (at center of mass energy of 2.76 TeV) for the measurements such as charged particle multiplicity density, azimuthal anisotropy coefficients and nuclear modification factor of charged hadrons. Comparison to similar measurements from the Relativistic Heavy Ion Collider (RHIC) at lower energy (center of mass energy of 200 GeV) suggests that system formed at LHC has a higher energy density, larger system size, and lives for a longer time. These measurements are compared to model calculations to obtain physical insights on the properties of matter created at the RHIC and LHC.