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Identical pion intensity interferometry in central Au plus Au collisions at 1.23A GeV HADES Collaboration
- 1.0507633 - ÚJF 2020 RIV NL eng J - Journal Article
Adamczewski-Musch, J. - Arnold, O. - Behnke, C. - Chlad, Lukáš - Kugler, Andrej - Rodriguez Ramos, Pablo - Sobolev, Yuri, G. - Svoboda, Ondřej - Tlustý, Pavel - Wagner, Vladimír … Total 117 authors
Identical pion intensity interferometry in central Au plus Au collisions at 1.23A GeV HADES Collaboration.
Physics Letters. B. Roč. 795, č. 8 (2019), s. 446-451. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA MŠMT LM2015049; GA MŠMT LTT17003; GA MŠMT EF16_013/0001677
Institutional support: RVO:61389005
Keywords : HADES collaboration * heavy ion collisions * GSI
OECD category: Nuclear physics
Impact factor: 4.384, year: 2019
Method of publishing: Open access
https://doi.org/10.1016/j.physletb.2019.06.047
We investigate identical pion HBT intensity interferometry in central Au +Au collisions at 1.23A GeV. High-statistics pi(-)pi(-) and pi(+)pi(+) data are measured with HADES at SIS18/GSI. The radius parameters, derived from the correlation function depending on relative momenta in the longitudinally comoving system and parametrized as three-dimensional Gaussian distribution, are studied as function of transverse momentum. A substantial charge-sign difference of the source radii is found, particularly pronounced at low transverse momentum. The extracted source parameters agree well with a smooth extrapolation of the center-of-mass energy dependence established at higher energies, extending the corresponding excitation functions down towards a very low energy.
Permanent Link: http://hdl.handle.net/11104/0298614
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