Proton-number fluctuations ins root S-NN=2.4 GeV Au + Au collisions studied with the High-Acceptance DiElectron Spectrometer (HADES)

Adamczewski-Musch, J.; Arnold, O.; Behnke, C.; Belounnas, A.; Belyaev, A.; Chlad, Lukáš; Kugler, Andrej; Rodriguez Ramos, Pablo; Sobolev, Yuri, G.; Svoboda, Ondřej; Tlustý, Pavel; Wagner, Vladimír

doi:https://dx.doi.org/10.1103/PhysRevC.102.024914

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Proton-number fluctuations ins root S-NN=2.4 GeV Au + Au collisions studied with the High-Acceptance DiElectron Spectrometer (HADES)

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SYSNO ASEP	0532286
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Proton-number fluctuations ins root S-NN=2.4 GeV Au + Au collisions studied with the High-Acceptance DiElectron Spectrometer (HADES)
Author(s)	Adamczewski-Musch, J. (DE) Arnold, O. (DE) Behnke, C. (DE) Belounnas, A. (FR) Belyaev, A. (RU) Chlad, Lukáš (UJF-V)_{RID, ORCID, SAI} Kugler, Andrej (UJF-V)_{RID, ORCID, SAI} Rodriguez Ramos, Pablo (UJF-V) Sobolev, Yuri, G. (UJF-V)_ORCID Svoboda, Ondřej (UJF-V)_{RID, ORCID, SAI} Tlustý, Pavel (UJF-V)_{ORCID, SAI} Wagner, Vladimír (UJF-V)_{RID, ORCID, SAI}
Number of authors	123
Article number	024914
Source Title	Physical Review C. - : American Physical Society - ISSN 2469-9985 Roč. 102, č. 2 (2020)
Number of pages	35 s.
Publication form	Print - P
Language	eng - English
Country	US - United States
Keywords	HADES ; proton collisions ; proton cumulants
Subject RIV	BG - Nuclear, Atomic and Molecular Physics, Colliders
OECD category	Nuclear physics
R&D Projects	EF16_013/0001677 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	LTT17003 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Research Infrastructure	FAIR-CZ II - 90112 - Ústav jaderné fyziky AV ČR, v. v. i.
Method of publishing	Limited access
Institutional support	UJF-V - RVO:61389005
UT WOS	000565707200002
EID SCOPUS	85093116699
DOI	10.1103/PhysRevC.102.024914
Annotation	We present an analysis of proton-number fluctuations in root S-NN = 2.4 GeV Au-197 + Au-197 collisions measured with the High-Acceptance DiElectron Spectrometer (HADES) at GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt. With the help of extensive detector simulations done with Isospin Quantum Molecular Dynamics (IQMD) transport model events including nuclear clusters, various nuisance effects influencing the observed proton cumulants have been investigated. Acceptance and efficiency corrections have been applied as a function of fine-grained rapidity and transverse momentum bins, as well as considering local track density dependencies. Next, the effects of volume changes within particular centrality selections have been considered and beyond-leading-order corrections have been applied to the data. The efficiency and volume-corrected proton number moments and cumulants K-n of orders n = 1, 2, 3, and 4 have been obtained as a function of centrality and phase-space bin, as well as the corresponding correlators C-n. We find that the observed correlators show a power-law scaling with the mean number of protons, i.e., C-n proportional to N (n), indicative of mostly long-range multiparticle correlations in momentum space. We also present a comparison of our results with Au + Au collision data obtained at the Relativistic Heavy Ion Collider (RHIC) at similar centralities but higher root S-NN.
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2021
Electronic address	https://doi.org/10.1103/PhysRevC.102.024914

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