Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

2-2018

Journal or Book Title

Physical Review Letters

Volume

120

Issue

6

First Page

062302

DOI

10.1103/PhysRevLett.120.062302

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 root 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 root 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.

Comments

This article is published as Aidala, C., Y. Akiba, M. Alfred, V. Andrieux, K. Aoki, N. Apadula, H. Asano et al. "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 120, no. 6 (2018): 062302. DOI: 10.1103/PhysRevLett.120.062302. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

Included in

Nuclear Commons

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