13-19 May 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

Coulomb influence on charged pion production in Au+Au collisions at relativistic energies

15 May 2018, 17:00
2h 40m
First floor and third floor (Palazzo del Casinò)

First floor and third floor

Palazzo del Casinò

Poster Collective dynamics Poster Session

Speaker

Prof. Alexandru Jipa (University of Bucharest, Faculty of Physics, Romania)

Description

Coulomb effects on charged pion transverse momentum spectra produced in Au-Au collisions at RHIC-BES energies are investigated. From these spectra the negative-to-positive pion ratios as a function of transverse momentum are obtained and used to analyze the Coulomb final state interaction between the charged pions and the positive net-charge of the particle source. The „Coulomb kick” (a momentum change due to Coulomb interaction) and initial pion ratio for three different collision energies and various centrality classes were obtained. The Coulomb kick shows a decrease with the increase of beam energy and clear centrality dependence, with largest values for the most central collisions. These results are connected with the kinetic freeze-out dynamics and results are discussed.

Content type Experiment
Centralised submission by Collaboration Presenter name already specified

Primary authors

Dr Oana Ristea (University of Bucharest, Faculty of Physics, Romania) Prof. Alexandru Jipa (University of Bucharest, Faculty of Physics, Romania) Dr Catalin Ristea (University of Bucharest, Faculty of Physics, Romania and Institute of Space Science, Magurele, Romania) Prof. Ionel Lazanu (University of Bucharest, Faculty of Physics, Romania) Dr Tiberiu Esanu (2University of Bucharest, Faculty of Physics, Romania and Horia Hulubei National Institute for Nuclear Physics and Engineering, Magurele, Romania) Dr Marius Calin (University of Bucharest, Faculty of Physics, Romania)

Presentation Materials