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Title: Measurement of long-range angular correlation and quadrupole anisotropy of pions and (anti)protons in central d + Au collisions at s N N = 200 GeV

Journal Article · · Physical Review Letters
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In this study, we present azimuthal angular correlations between charged hadrons and energy deposited in calorimeter towers in central d+Au and aluminum bias p+p collisions at √sNN = 200 GeV. The charged hadron is measured at midrapidity lηl < 0.35, and the energy us measured at large rapidity (–3.7 < η < –3.1, Au-going direction). An enhanced near-side angular correlation across lΔηl > 2.75 is observed in d+Au collisions. Using the event plane method applied to the Au-going energy distribution, we extract the anisotropy strength v₂ for inclusive charged hadrons at midrapidity up to pT = 4.5 GeV/c. We also present the measurement of v₂ for identified π± and (anti)protons in central d+Au collisions, and observe a mass-ordering pattern similar to that seen in heavy ion collisions. These results are compared with viscous hydrodynamic calculations and measurements from p+Pb at √sNN = 5.02 TeV. Finally, the magnitude of the mass-ordering in d+Au is found to be smaller than that in p+Pb collisions, which may indicate smaller radial flow in lower energy d+Au collisions.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
PHENIX Collaboration
Grant/Contract Number:
SC00112704; AC05-00OR22725
OSTI ID:
1188245
Alternate ID(s):
OSTI ID: 1182806; OSTI ID: 1324133
Report Number(s):
BNL-108032-2015-JA; PRLTAO; KB0201021
Journal Information:
Physical Review Letters, Vol. 114, Issue 19; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 131 works
Citation information provided by
Web of Science

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Pseudorapidity and transverse momentum dependence of flow harmonics in pPb and PbPb collisions text January 2017
Creation of quark–gluon plasma droplets with three distinct geometries journal December 2018
Novel Collective Phenomena in High-Energy Proton-Proton and Proton-Nucleus Collisions text January 2015
Pseudorapidity dependence of long-range two-particle correlations in pPb collisions at √sNN=5.02 TeV text January 2017
Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity p+Pb Collisions at √sNN=8.16  TeV text January 2018
Origin of the mass splitting of azimuthal anisotropies in a multi-phase transport model text January 2016
Origin of the mass splitting of elliptic anisotropy in a multiphase transport model journal May 2016
Pseudorapidity and transverse momentum dependence of flow harmonics in p Pb and PbPb collisions text January 2018
Measurement of multi-particle azimuthal correlations in $pp$, $p+$Pb and low-multiplicity Pb$+$Pb collisions with the ATLAS detector text January 2017
Mass ordering of spectra from fragmentation of saturated gluon states in high multiplicity proton-proton collisions text January 2016
Origin of the mass splitting of azimuthal anisotropies in a multiphase transport model journal July 2017
Constraints on rapidity-dependent initial conditions from charged particle pseudorapidity densities and two-particle correlations text January 2016
Bulk quantities in nuclear collisions from running-coupling k T factorization and hybrid simulations journal July 2019
Evidence for Collective Multiparticle Correlations in p-Pb Collisions text January 2015
Strange hadron production in pp and pPb collisions at sNN =5.02 TeV text January 2020
Collective flow and hydrodynamics in large and small systems at the LHC journal June 2017
Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at $$\sqrt{s_{_\mathrm {NN}}} =5.02$$ s NN = 5.02 $$\,\text {TeV}$$ TeV journal May 2015
Influence of initial-state momentum anisotropy on the final-state collectivity in small collision systems journal December 2019
Collectivity and electromagnetic radiation in small systems text January 2016
Evidence for collective multiparticle correlations in $p-Pb$ collisions text January 2015
Elliptic flow from color-dipole orientation in pp and pA collisions text January 2017
Collectivity in Small Collision Systems: An Initial-State Perspective journal January 2016
Influence of initial-state momentum anisotropy on the final-state collectivity in small collision systems text January 2019
Measurement of multi-particle azimuthal correlations in pp, p + Pb and low-multiplicity Pb + Pb collisions with the ATLAS detector text January 2017
Strange hadron production in pp and p Pb collisions at s N N = 5.02 TeV journal June 2020
Initial state fluctuations in collisions between light and heavy ions text January 2016