Measurements of Multiparticle Correlations in d+Au Collisions at 200, 62.4, 39, and 19.6 GeV and p+Au Collisions at 200 GeV and Implications for Collective Behavior

Physical Review Letters
C AidalaPHENIX Collaboration

Abstract

Recently, multiparticle-correlation measurements of relativistic p/d/^{3}He+Au, p+Pb, and even p+p collisions show surprising collective signatures. Here, we present beam-energy-scan measurements of two-, four-, and six-particle angular correlations in d+Au collisions at sqrt[s_{NN}]=200, 62.4, 39, and 19.6 GeV. We also present measurements of two- and four-particle angular correlations in p+Au collisions at sqrt[s_{NN}]=200  GeV. We find the four-particle cumulant to be real valued for d+Au collisions at all four energies. We also find that the four-particle cumulant in p+Au has the opposite sign as that in d+Au. Further, we find that the six-particle cumulant agrees with the four-particle cumulant in d+Au collisions at 200 GeV, indicating that nonflow effects are subdominant. These observations provide strong evidence that the correlations originate from the initial geometric configuration, which is then translated into the momentum distribution for all particles, commonly referred to as collectivity.

References

Jul 1, 1992·Physical Review. D·J Y Ollitrault
Dec 10, 2013·Physical Review Letters·A AdareUNKNOWN PHENIX Collaboration
Jan 3, 2015·Physical Review Letters·Adam Bzdak, Guo-Liang Ma
Jul 17, 2015·Physical Review Letters·V KhachatryanUNKNOWN CMS Collaboration
Nov 10, 2015·Physical Review Letters·A AdareUNKNOWN PHENIX Collaboration

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Citations

Sep 8, 2018·Physical Review Letters·A M SirunyanUNKNOWN CMS Collaboration
Nov 21, 2020·Physical Review Letters·Giuliano GiacaloneChun Shen
Aug 7, 2021·Physical Review Letters·S AcharyaUNKNOWN A Large Ion Collider Experiment Collaboration

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