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Charged-to-neutral correlation at forward rapidity in Au + Au collisions at sNN =200 GeV

Adamczyk, L.
•
Adkins, J. K.
•
Agakishiev, G.
altro
Zyzak, M.
2015
  • journal article

Periodico
PHYSICAL REVIEW. C, NUCLEAR PHYSICS
Abstract
Event-by-event fluctuations of the multiplicities of inclusive charged particles and photons at forward rapidity in Au + Au collisions at √sNN = 200 GeV have been studied. The dominant contribution to such fluctuations is expected to come from correlated production of charged and neutral pions. We search for evidence of dynamical fluctuations of different physical origins. Observables constructed out of moments of multiplicities are used as measures of fluctuations. Mixed events and model calculations are used as base lines. Results are compared to the dynamical net-charge fluctuations measured in the same acceptance. A nonzero statistically significant signal of dynamical fluctuations is observed in excess to the model prediction when charged particles and photons are measured in the same acceptance. We find that, unlike dynamical net-charge fluctuation, charge-neutral fluctuation is not dominated by correlation owing to particle decay. Results are compared to the expectations based on the generic production mechanism of pions owing to isospin symmetry, for which no significant (<1%) deviation is observed.
DOI
10.1103/PhysRevC.91.034905
WOS
WOS:000352078500002
Archivio
http://hdl.handle.net/11368/2942066
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84961291848
http://harvest.aps.org/bagit/articles/10.1103/PhysRevC.91.034905/apsxml
Diritti
closed access
license:copyright editore
FVG url
https://arts.units.it/request-item?handle=11368/2942066
Soggetti
  • Nuclear and High Ener...

  • heavy ion

  • quark gluon plasma

  • RHIC

  • STAR

Scopus© citazioni
4
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
6
Data di acquisizione
Mar 23, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
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