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Fluctuations of charge separation perpendicular to the event plane and local parity violation in root S-NN=200 GeV Au + Au collisions at the BNL Relativistic Heavy Ion Collider
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SYSNO ASEP 0486429 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Fluctuations of charge separation perpendicular to the event plane and local parity violation in root S-NN=200 GeV Au + Au collisions at the BNL Relativistic Heavy Ion Collider Author(s) Adamczyk, L. (PL)
Adkins, J. K. (US)
Agakishiev, G. (RU)
Barnovská, Zuzana (UJF-V)
Bielčík, J. (CZ)
Bielčíková, Jana (UJF-V) RID, ORCID, SAI
Chaloupka, P. (CZ)
Chung, Paul (UJF-V)
Hajková, O. (CZ)
Pachr, M. (CZ)
Rusňák, Jan (UJF-V) RID, ORCID, SAI
Šumbera, Michal (UJF-V) RID, ORCID, SAI
Vértési, Robert (UJF-V)Number of authors 367 Article number 064911 Source Title Physical Review C. - : American Physical Society - ISSN 2469-9985
Roč. 88, č. 6 (2013)Number of pages 10 s. Publication form Print - P Language eng - English Country US - United States Keywords HOT QCD ; CONSERVATION ; COLLISIONS Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders OECD category Nuclear physics R&D Projects LA09013 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UJF-V - RVO:61389005 UT WOS 000332147100007 EID SCOPUS 84892921965 DOI 10.1103/PhysRevC.88.064911 Annotation Previous experimental results based on data (similar to 15 x 10(6) events) collected by the STAR detector at the BNL Relativistic Heavy Ion Collider suggest event-by-event charge-separation fluctuations perpendicular to the event plane in noncentral heavy-ion collisions. Here we present the correlator previously used split into its two component parts to reveal correlations parallel and perpendicular to the event plane. The results are from a high-statistics 200-GeV Au + Au collisions data set (57 x 10(6) events) collected by the STAR experiment. We explicitly count units of charge separation from which we find clear evidence for more charge-separation fluctuations perpendicular than parallel to the event plane. We also employ a modified correlator to study the possible P-even background in same- and opposite-charge correlations, and find that the P-even background may largely be explained by momentum conservation and collective motion. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2018
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