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Article
Report number arXiv:1712.07929 ; CERN-EP-2017-318
Title Relative particle yield fluctuations in Pb-Pb collisions at sNN=2.76 TeV
Related titleRelative particle yield fluctuations in Pb-Pb collisions at sNN=2.76 TeV
Author(s) ALICE Collaboration  Show all 1013 authors
Publication 2019-03-14
Imprint 01 Dec 2017
Number of pages 19
Note 19 pages, 4 captioned figures, 2 tables, authors from page 14, submitted to EPJC, figures at http://aliceinfo.cern.ch/ArtSubmission/node/4136
In: Eur. Phys. J. C 79 (2019) 236
DOI 10.1140/epjc/s10052-019-6711-x
Subject category Nuclear Physics - Experiment ; hep-ex ; Particle Physics - Experiment ; nucl-ex
Accelerator/Facility, Experiment CERN LHC ; ALICE
Free keywords quark gluon plasma ; particle correlations and fluctuations ; experimental results
Abstract First results on K/π, p/π and K/p fluctuations are obtained with the ALICE detector at the CERN LHC as a function of centrality in Pb-Pb collisions at sNN=2.76 TeV. The observable νdyn, which is defined in terms of the moments of particle multiplicity distributions, is used to quantify the magnitude of dynamical fluctuations of relative particle yields and also provides insight into the correlation between particle pairs. This study is based on a novel experimental technique, called the Identity Method, which allows one to measure the moments of multiplicity distributions in case of incomplete particle identification. The results for p/π show a change of sign in νdyn from positive to negative towards more peripheral collisions. For central collisions, the results follow the smooth trend of the data at lower energies and νdyn exhibits a change in sign for p/π and K/p.
Copyright/License publication: (License: CC-BY-4.0)
Preprint: © 2017-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: enrico.scomparin@cern.ch


 Record created 2017-12-01, last modified 2024-11-27


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