Importance of initial and final state effects for azimuthal correlations in p+Pb collisions

Greif, Moritz; Greiner, Carsten; Schenke, Bjorn; Schlichting, Soren; Xu, Zhe

doi:10.1103/PhysRevD.96.091504

Title: Importance of initial and final state effects for azimuthal correlations in $p + Pb$ collisions

Journal Article · Mon Nov 27 00:00:00 EST 2017 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.96.091504· OSTI ID:1431278

Greif, Moritz ^[1]; Greiner, Carsten ^[1]; Schenke, Bjorn ^[2]; Schlichting, Soren ^[3]; Xu, Zhe ^[4]

Johann Wolfgang Goethe-Universität, Frankfurt (Germany). Institut für Theoretische Physik
Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Department
Univ. of Washington, Seattle, WA (United States). Department of Physics
Tsinghua University and Collaborative Innovation Center of Quantum Matter, Beijing (China). Department of Physics

In this work, we investigate the relative importance of initial and final state effects on azimuthal correlations of gluons in low and high multiplicity p+Pb collisions. To achieve this, we couple Yang-Mills dynamics of pre-equilibrium gluon fields (IP-GLASMA) to a perturbative QCD based parton cascade for the final state evolution (BAMPS) on an event-by-event basis. We find that signatures of both the initial state correlations and final state interactions are seen in azimuthal correlation observables, such as v₂ {2PC} (p_T), their strength depending on the event multiplicity and transverse momentum. Initial state correlations dominate v₂ {2PC} (p_T) in low multiplicity events for transverse momenta p_T > 2 GeV. Lastly, while final state interactions are dominant in high multiplicity events, initial state correlations affect v₂ {2PC} (p_T) for p_T > 2 GeV as well as the pT integrated v₂ {2PC}.

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Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); BNL Program Development

Grant/Contract Number:: SC0012704; FG02-97ER41014; AC02-05CH11231

OSTI ID:: 1431278

Alternate ID(s):: OSTI ID: 1410401

Report Number(s):: BNL-203392-2018-JAAM; PRVDAQ; TRN: US1802770

Journal Information:: Physical Review D, Vol. 96, Issue 9; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 35 works

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Influence of initial-state momentum anisotropy on the final-state collectivity in small collision systems Nie, Maowu; Yi, Li; Luo, Xiaofeng Physical Review C, Vol. 100, Issue 6 https://doi.org/10.1103/physrevc.100.064905	journal	December 2019
Influence of electromagnetic fields in proton-nucleus collisions at relativistic energy Oliva, Lucia; Moreau, Pierre; Voronyuk, Vadim Physical Review C, Vol. 101, Issue 1 https://doi.org/10.1103/physrevc.101.014917	journal	January 2020
Opacity dependence of elliptic flow in kinetic theory Kurkela, Aleksi; Wiedemann, Urs Achim; Wu, Bin The European Physical Journal C, Vol. 79, Issue 9 https://doi.org/10.1140/epjc/s10052-019-7262-x	journal	September 2019
Flow in AA and pA as an interplay of fluid-like and non-fluid like excitations Kurkela, Aleksi; Wiedemann, Urs Achim; Wu, Bin The European Physical Journal C, Vol. 79, Issue 11 https://doi.org/10.1140/epjc/s10052-019-7428-6	journal	November 2019
Study of collective anisotropies $$v_2$$v2 and $$v_3$$v3 and their fluctuations in pA collisions at LHC within a relativistic transport approach Sun, Yifeng; Plumari, Salvatore; Greco, Vincenzo The European Physical Journal C, Vol. 80, Issue 1 https://doi.org/10.1140/epjc/s10052-019-7577-7	journal	January 2020
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Flow in AA and pA as an interplay of fluid-like and non-fluid like excitations Kurkela, Aleksi; Wiedemann, Urs Achim; Wu, Bin arXiv https://doi.org/10.48550/arxiv.1905.05139	text	January 2019
Influence of initial-state momentum anisotropy on the final-state collectivity in small collision systems Nie, Maowu; Yi, Li; Jia, Jiangyong arXiv https://doi.org/10.48550/arxiv.1906.01422	text	January 2019

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Title: Importance of initial and final state effects for azimuthal correlations in $p + Pb$ collisions