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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

Aidala, C. ; Akiba, Y. ; Alfred, M. ; Andrieux, V. ; Aoki, K. ; Apadula, N ; Oskarsson, Anders LU and Silvermyr, David LU orcid (2018) In Physical Review Letters 120(6).
Abstract
Recently, multiparticle-correlation measurements of relativistic p/d/He3+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... (More)
Recently, multiparticle-correlation measurements of relativistic p/d/He3+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. © 2018 American Physical Society. (Less)
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Contribution to journal
publication status
published
subject
keywords
Colliding beam accelerators, Germanium compounds, Lead, Angular correlations, Beam energies, Collective behavior, Geometric configurations, Measurements of, Momentum distributions, Multi-particle correlation, Scan measurement, Gold compounds
in
Physical Review Letters
volume
120
issue
6
article number
062302
publisher
American Physical Society
external identifiers
  • scopus:85041893613
  • pmid:29481251
ISSN
1079-7114
DOI
10.1103/PhysRevLett.120.062302
language
English
LU publication?
yes
additional info
Export Date: 21 February 2018
id
5a801825-5b07-4420-960e-c36bcb5ea623
date added to LUP
2018-02-21 08:34:47
date last changed
2021-10-06 03:01:55
@article{5a801825-5b07-4420-960e-c36bcb5ea623,
  abstract     = {Recently, multiparticle-correlation measurements of relativistic p/d/He3+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. © 2018 American Physical Society.},
  author       = {Aidala, C. and Akiba, Y. and Alfred, M. and Andrieux, V. and Aoki, K. and Apadula, N and Oskarsson, Anders and Silvermyr, David},
  issn         = {1079-7114},
  language     = {eng},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {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},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.120.062302},
  doi          = {10.1103/PhysRevLett.120.062302},
  volume       = {120},
  year         = {2018},
}