Document Type

Article

Publication Date

2015

DOI

10.1103/PhysRevC.91.034905

Publication Title

Physical Review C

Volume

91

Issue

3

Pages

034905 (13 pages)

Abstract

Event-by-event fluctuations of the multiplicities of inclusive charged particles and photons at forward rapidity in Au + Au collisions at √s(NN) = 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 (

Original Publication Citation

Adamczyk, L., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., . . . Collaboration, S. (2015). Charged-to-neutral correlation at forward rapidity in Au + Au collisions at √s(NN)=200 GeV. Physical Review C, 91(3), 034905. doi:10.1103/PhysRevC.91.034905

Included in

Nuclear Commons

Share

COinS