Identical pion intensity interferometry at root s(NN)=2.4 GeV HADES collaboration
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00525145" target="_blank" >RIV/61389005:_____/20:00525145 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1140/epja/s10050-020-00116-w" target="_blank" >https://doi.org/10.1140/epja/s10050-020-00116-w</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epja/s10050-020-00116-w" target="_blank" >10.1140/epja/s10050-020-00116-w</a>
Alternative languages
Result language
angličtina
Original language name
Identical pion intensity interferometry at root s(NN)=2.4 GeV HADES collaboration
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Physical Journal A
ISSN
1434-6001
e-ISSN
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Volume of the periodical
56
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
20
Pages from-to
140
UT code for WoS article
000537289700007
EID of the result in the Scopus database
2-s2.0-85085710627