Abstract
We present an overview of the results obtained in pPb and PbPb collisions at the Large Hadron Collider during Run 1. We first discuss the results for global characteristics: cross sections, hadron multiplicities, azimuthal asymmetries, correlations at low transverse momentum, hadrochemistry, and femtoscopy. We then review hard and electromagnetic probes: particles with high transverse momentum, jets, heavy quarks, quarkonium, electroweak bosons and high transverse momentum photons, low transverse momentum photons and dileptons, and ultraperipheral collisions. We mainly focus on the experimental results, and present very briefly the main current theoretical explanations.
Highlights
Quantum Chromodynamics (QCD) [1] is the quantum field theory of strong interactions, see the recent books [2, 3]
Let us note that STARLIGHT, a simulator widely used by the experimental collaborations, is a model that contains no shadowing of nPDFs. In this manuscript we have overviewed the main results obtained in pPb and PbPb collisions at the Large Hadron Collider during Run 1
We have focused on a selection of experimental results and, due to space limitations, the main current theoretical explanations have just been briefly presented
Summary
Quantum Chromodynamics (QCD) [1] is the quantum field theory of strong interactions, see the recent books [2, 3]. New high-density regimes of QCD are theoretically expected and signatures of their existence can be explored in both proton-nucleus and nucleus-nucleus collisions. Such studies offer the possibility of investigating basic physics questions like the number of interactions between particles required to consider a collection of them as a true medium and the corresponding transition from a microscopic to a macroscopic description, in a relativistic quantum system.
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