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

Scientific paper - Original scientific paper

• Author: C. Aidala
• Author: ...
• Author: Mirta Dumancic
• Author: ...
• Author: Mihael Makek; MBZ: 256122
• Author: ...
• Author: Nikola Vukman; MBZ: 362186
• Author: ...
• Author: L. Zou
• Collaboration: PHENIX Collaboration
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

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 √sNN = 200, 62.4, 39, and 19.6 GeV. We also present measurements of two- and four-particle angular correlations in p + Au collisions at √sNN = 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.

• Keywords (english): Multiparticle Correlations; d+Au; p+Au; 200 GeV; PHENIX; RHIC
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review Letters
• Numbering: vol. 120, no. 6, 062302
• p-ISSN: 0031-9007
• e-ISSN: 1079-7114
• DOI: https://doi.org/10.1103/PhysRevLett.120.062302
• URN:NBN: urn:nbn:hr:217:947671
• Publication: 2018
• Document URL: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.062302
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2018 American Physical Society. Received 20 July 2017; published 6 February 2018.
• Created on: 2020-02-29 21:08:23