Measurement of Long-range Azimuthal Correlations in Proton--Proton and Proton--Lead Collisions with ATLAS

A Behera

doi:10.5506/aphyspolbsupp.12.247

Abstract

Measurement of Long-range Azimuthal Correlations in Proton--Proton and Proton--Lead Collisions with ATLAS

Highlights

With the start of the BES program at RHIC, the studies of the phase structure of QCD at non-vanishing baryon density became of major interest
It is clear that any meaningful interpretation of data requires good knowledge of the net baryon density and both the net baryon number and the volume these baryons occupy in the configuration space
Taking the standard value σ ≈ 1 GeV/fm, one sees that the nucleon of c.m. energy 10 GeV shall stop at the distance of about 10 fm from the collision point! In the case of central nucleus–nucleus collision, where one expects many nucleon–nucleon collisions and three wounded quarks in every nucleon, one may estimate the effective string tension growing to σ ≈ 3 GeV/fm

Summary

Introduction

With the start of the BES program at RHIC, the studies of the phase structure of QCD at non-vanishing baryon density became of major interest. Two limiting pictures may be considered: (i) The colliding nucleons transfer most of their energy into produced particles very soon after collision and stop at a very short distance from the collision point. A. Bialas and the left-moving nucleons are separated in the configuration space and the corresponding volume is larger.

Results

Conclusion