Abstract

There is strong evidence for the formation of small droplets of quark-gluon plasma in $p/d/^{3}$He+Au collisions at the Relativistic Heavy Ion Collider (RHIC) and in $p$+$p$/Pb collisions at the Large Hadron Collider. In particular, the analysis of data at RHIC for different geometries obtained by varying the projectile size and shape has proven insightful. In the present analysis, we find excellent agreement with the previously published PHENIX at RHIC results on elliptical and triangular flow with an independent analysis via the two-particle correlation method, which has quite different systematic uncertainties and an independent code base. In addition, the results are extended to other detector combinations with different kinematic (pseudorapidity) coverage. These results provide additional constraints on contributions from nonflow and longitudinal decorrelations.

Highlights

  • The Relativistic Heavy Ion Collider (RHIC) was built and the Large Hadron Collider (LHC) heavy-ion program initiated to study the formation of nucleus-sized droplets of quark-gluon plasma (QGP) in the laboratory

  • The main physics results from the 3×2PC analysis are the extracted v2,3 coefficients as a function of charged hadron pT at midrapidity |η| < 0.35. These values may depend on the other two detectors used in combination with the central arm spectrometers (CNT) tracks

  • We highlight that care should be employed when comparing cn coefficients directly as the pT acceptance of the BBCS and FVTXS differ, as well as their relative particle contributions

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Summary

Introduction

The Relativistic Heavy Ion Collider (RHIC) was built and the Large Hadron Collider (LHC) heavy-ion program initiated to study the formation of nucleus-sized droplets of quark-gluon plasma (QGP) in the laboratory. This focused scientific enterprise has been remarkably successful. The standard model of heavy-ion collisions includes the formation of QGP that expands hydrodynamically before the phase transition to hadrons with confined quarks and gluons. In the years 2014, 2015, and 2016, RH√IC provided collisions of 3He +Au, p + Au, and d + Au at sNN = 200 GeV, extending earlier results from 2003 and 2008 d + Au runs. The full set of elliptic and triangular azimuthal anisotropy coefficients (v2 and v3, respectively) for all three collision geometries were published in Nature Physics [16]

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