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

Thumbnail Image
Aidala, C.
Apadula, Nicole
Hill, John
Hotvedt, Nels
Lajoie, John
Lebedev, Alexandre
Lee, S. H.
Patel, Milap
Perry, Joshua
Major Professor
Committee Member
Journal Title
Journal ISSN
Volume Title
Ogilvie, Craig
Contingent Worker
Research Projects
Organizational Units
Organizational Unit
Physics and Astronomy
Physics and astronomy are basic natural sciences which attempt to describe and provide an understanding of both our world and our universe. Physics serves as the underpinning of many different disciplines including the other natural sciences and technological areas.
Journal Issue
Is Version Of

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.


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.

Subject Categories
Mon Jan 01 00:00:00 UTC 2018