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Evidence of Mass Ordering of Charm and Bottom Quark Energy Loss in Au plus Au Collisions at RHIC
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SYSNO ASEP 0569561 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evidence of Mass Ordering of Charm and Bottom Quark Energy Loss in Au plus Au Collisions at RHIC Author(s) Abdallah, M. S. (EG)
Aboona, B. E. (US)
Adam, J. (CZ)
Adamczyk, L. (PL)
Bielčík, J. (CZ)
Bielčíková, Jana (UJF-V) RID, ORCID, SAI
Holub, L. (CZ)
Chaloupka, P. (CZ)
Kosarzewski, L. K. (CZ)
Kramárik, L. (CZ)
Líčeník, Robert (UJF-V) ORCID, SAI
Prozorova, V. (CZ)
Robotková, Monika (UJF-V) ORCID, SAI
Šumbera, Michal (UJF-V) RID, ORCID, SAI
Truhlář, T. (CZ)
Trzeciak, B. A. (CZ)
Vaněk, J. (CZ)Number of authors 371 Article number 1150 Source Title European Physical Journal C. - : Springer - ISSN 1434-6044
Roč. 82, č. 12 (2022)Number of pages 11 s. Publication form Print - P Language eng - English Country US - United States Keywords STAR collaboration ; heavy ion collisions OECD category Particles and field physics R&D Projects LTT18002 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Research Infrastructure BNL-CZ II - 90109 - České vysoké učení technické v Praze Method of publishing Open access Institutional support UJF-V - RVO:61389005 UT WOS 000928053200001 EID SCOPUS 85150218688 DOI 10.1140/epjc/s10052-022-11003-7 Annotation Partons traversing the strongly interacting medium produced in heavy-ion collisions are expected to lose energy depending on their color charge and mass. We measure the nuclear modification factors for charm- and bottom-decay electrons, defined as the ratio of yields, divided by the number of binary nucleon-nucleon collisions, in root S-NN = 200 GeV Au+Au collisions to p+p collisions (R-AA), or in central to peripheral Au+Au collisions (R-CP). We find the bottom-decay electron R-AA and R-CP to be significantly higher than those of charm-decay electrons. Model calculations including mass-dependent parton energy loss in a strongly coupled medium are consistent with the measured data. These observations provide evidence of mass ordering of charm and bottom quark energy loss when traversing through the strongly coupled medium created in heavy-ion collisions. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2023 Electronic address https://doi.org/10.1140/epjc/s10052-022-11003-7
Number of the records: 1