Low-mass e(+)e(-) mass distributions from 1.23A GeV Au plus Au collisions with HADES

0489246 - ÚJF 2019 NL eng J - Journal Article
Galatyuk, T. - Chlad, Lukáš - Kugler, Andrej - Rodriguez Ramos, Pablo - Sobolev, Yuri, G. - Svoboda, Ondřej - Tlustý, Pavel - Wagner, Vladimír … Total 112 authors
Low-mass e(+)e(-) mass distributions from 1.23A GeV Au plus Au collisions with HADES.
Nuclear Physics. A. Roč. 967, č. 11 (2017), s. 680-683. ISSN 0375-9474. E-ISSN 1873-1554.
[26th International Conference on Ultrarelativistic Nucleus-Nucleus Collissions (Quark Matter). Chicago, 05.02.2017-11.02.2017]
R&D Projects: GA MŠMT EF16_013/0001677; GA ČR GA13-06759S; GA MŠMT LM2015049
Institutional support: RVO:61389005
Keywords : HADES * dielectrons
OECD category: Nuclear physics
Impact factor: 1.992, year: 2017

We present measurements of low-mass electron pairs for the Au+Au system based on a data sample of 2.6 billion events of the 40% most central collisions. In order to understand the microscopic structure of matter in the region of high baryochemical potential HADES pursues a strategy, which relies on systematic measurements of virtual photons emission in elementary and heavy-ion collisions. As of now, HADES has completed measurements of rare penetrating probes in p+p, n+p, C+C, p+Nb and Ar+KCl collisions. In continuation of a systematic investigation of the emissivity of strongly interacting matter, HADES has recently measured the dielectron emission in Au+Au collisions at 1.23A GeV beam energy. This measurement is part of the beam energy scan and marks lowest point in the excitation function of low-mass thermal dilepton radiation.
Permanent Link: http://hdl.handle.net/11104/0283689