Identical pion intensity interferometry at root s(NN)=2.4 GeV HADES collaboration

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/10.1140/epja/s10050-020-00116-w

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Identical pion intensity interferometry at root s(NN)=2.4 GeV HADES collaboration

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SYSNO ASEP	0525145
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Identical pion intensity interferometry at root s(NN)=2.4 GeV HADES collaboration
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	119
Article number	140
Source Title	European Physical Journal A. - : Springer - ISSN 1434-6001 Roč. 56, č. 5 (2020)
Number of pages	20 s.
Publication form	Print - P
Language	eng - English
Country	US - United States
Keywords	HADES collaboration ; collisions ; correlation
Subject RIV	BF - Elementary Particles and High Energy Physics
OECD category	Particles and field 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	Open access
Institutional support	UJF-V - RVO:61389005
UT WOS	000537289700007
EID SCOPUS	85085710627
DOI	10.1140/epja/s10050-020-00116-w
Annotation	High-statistics pi(-)pi(-) and pi(+)pi(+) femtoscopy data are presented for Au + Au collisions at root s(NN) = 2.4 GeV, measured with HADES at SIS18/GSI. The experimental correlation functions allow the determination of the space-time extent of the corresponding emission sources via a comparison to models. The emission source, parametrized as three-dimensional Gaussian distribution, is studied in dependence on pair transverse momentum, azimuthal emission angle with respect to the reaction plane, collision centrality and beam energy. For all centralities and transverse momenta, a geometrical distribution of ellipsoidal shape is found in the plane perpendicular to the beam direction with the larger extension perpendicular to the reaction plane. For large transverse momenta, the corresponding eccentricity approaches the initial eccentricity. The eccentricity is smallest for most central collisions, where the shape is almost circular. The magnitude of the tilt angle of the emission ellipsoid in the reaction plane decreases with increasing centrality and increasing transverse momentum. All source radii increase with centrality, largely exhibiting a linear rise with the cube root of the number of participants. A substantial charge-sign difference of the source radii is found, appearing most pronounced at low transverse momentum. The extracted source parameters are consistent with the extrapolation of their energy dependence down from higher energies.
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2021
Electronic address	https://doi.org/10.1140/epja/s10050-020-00116-w

Number of the records: 1