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Beam Energy Dependence of Jet-Quenching Effects in Au plus Au Collisions at root s(NN)=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV
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SYSNO ASEP 0492090 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Beam Energy Dependence of Jet-Quenching Effects in Au plus Au Collisions at root s(NN)=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV Author(s) Adamczyk, L. (PL)
Adams, J. R. (US)
Adkins, J. K. (US)
Agakishiev, G. (RU)
Aggarwal, M. M. (IN)
Bielčík, J. (CZ)
Bielčíková, Jana (UJF-V) RID, ORCID, SAI
Chaloupka, P. (CZ)
Federič, Pavol (UJF-V) ORCID, SAI
Federičová, P. (CZ)
Harlenderová, A. (CZ)
Kocmánek, Martin (UJF-V)
Kvapil, J. (CZ)
Lidrych, J. (CZ)
Rusňák, Jan (UJF-V) RID, ORCID, SAI
Rusňáková, O. (CZ)
Šaur, Miroslav (UJF-V)
Šimko, Miroslav (UJF-V) ORCID, SAI
Šumbera, Michal (UJF-V) RID, ORCID, SAI
Trzeciak, B. A. (CZ)Number of authors 349 Article number 032301 Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 121, č. 3 (2018)Number of pages 8 s. Publication form Print - P Language eng - English Country US - United States Keywords STAR ; collisions ; high p(T) Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders OECD category Nuclear physics R&D Projects EF16_013/0001569 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UJF-V - RVO:61389005 UT WOS 000439286800003 EID SCOPUS 85050377401 DOI 10.1103/PhysRevLett.121.032301 Annotation We report measurements of the nuclear modification factor R-CP for charged hadrons as well as identified pi (+(-)) K+(-), and p((p) over bar) for Au + Au collision energies of root s(NN) = 7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV. We observe a clear high-p(T) net suppression in central collisions at 62.4 GeV for charged hadrons which evolves smoothly to a large net enhancement at lower energies. This trend is driven by the evolution of the pion spectra but is also very similar for the kaon spectra. While the magnitude of the proton R-CP at high p(T) does depend on the collision energy, neither the proton nor the antiproton R-CP at high p(T) exhibit net suppression at any energy. A study of how the binary collision-scaled high-p(T) yield evolves with centrality reveals a nonmonotonic shape that is consistent with the idea that jet quenching is increasing faster than the combined phenomena that lead to enhancement. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2019
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