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          Institute: MPI für Physik     Collection: YB 2016     Display Documents



ID: 716318.0, MPI für Physik / YB 2016
Charged-to-neutral Correlation at Forward Rapidity in Au+Au Collisions at sqrt{s_NN}=200 GeV
Authors:STAR Collaboration; Adamczyk, L.; Schmitz, N.; Seyboth, P.; et al.
Date of Publication (YYYY-MM-DD):2015
Title of Journal:Physical Review C
Journal Abbrev.:Phys.Rev.C
Issue / Number:91
Start Page:034905
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:Event-by-event fluctuations of the ratio of inclusive charged to photon multiplicities at forward rapidity in Au+Au collision at sqrt{s_{NN}=200 GeV have been studied. Dominant contribution to such fluctuations is expected to come from correlated production of charged and neutral pions. We search for evidences 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 baselines. Results are compared to the dynamical net-charge fluctuations measured in the same acceptance. A non-zero 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 due to particle decay. Results are compared to the expectations based on the generic production mechanism of pions due to isospin symmetry, for which no significant (<1%) deviation is observed.
Classification / Thesaurus:STAR
Comment of the Author/Creator:14 pages, 6 figures
External Publication Status:published
Document Type:Article
Communicated by:MPI für Physik
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2015-358
URL:http://inspirehep.net/search?p=find+eprint+1408.50...
URL:http://arXiv.org/abs/arxiv:1408.5017
URL:https://publications.mppmu.mpg.de/?action=search&m...
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