Identical pion intensity interferometry in central Au plus Au collisions at 1.23A GeV HADES Collaboration

0507633 - ÚJF 2020 RIV NL eng J - Článek v odborném periodiku
Adamczewski-Musch, J. - Arnold, O. - Behnke, C. - Chlad, Lukáš - Kugler, Andrej - Rodriguez Ramos, Pablo - Sobolev, Yuri, G. - Svoboda, Ondřej - Tlustý, Pavel - Wagner, Vladimír … celkem 117 autorů
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
Grant CEP: GA MŠMT LM2015049; GA MŠMT LTT17003; GA MŠMT EF16_013/0001677
Institucionální podpora: RVO:61389005
Klíčová slova: HADES collaboration * heavy ion collisions * GSI
Obor OECD: Nuclear physics
Impakt faktor: 4.384, rok: 2019
Způsob publikování: 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.
Trvalý link: http://hdl.handle.net/11104/0298614