Balance functions of (un)identified hadrons in Pb-Pb, p-Pb, and pp collisions at the LHC

0503085 - ÚJF 2020 RIV NL eng J - Journal Article
Pan, J. J. - Acharya, S. - Acosta, F. T. - Adamová, Dagmar - Bielčík, J. - Bielčíková, Jana - Broz, M. - Contreras, J. G. - Horák, D. - Křížek, Filip - Kučera, Vít - Kushpil, Svetlana - Lavička, R. - Mareš, Jiří A. - Petráček, V. - Šumbera, Michal - Závada, Petr … Total 1019 authors
Balance functions of (un)identified hadrons in Pb-Pb, p-Pb, and pp collisions at the LHC.
Nuclear Physics. A. Roč. 982, č. 2 (2019), s. 315-318. ISSN 0375-9474. E-ISSN 1873-1554.
[27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2018). Venice, 13.05.2018-19.05.2018]
Institutional support: RVO:68378271 ; RVO:61389005
Keywords : ALICE collaboration * balance function * unidentified hadron
OECD category: Nuclear physics; Particles and field physics (FZU-D)
Impact factor: 1.695, year: 2019
Method of publishing: Open access
https://doi.org/10.1016/j.nuclphysa.2018.09.022

In ultrarelativistic heavy-ion collisions, correlations of particles with opposite quantum numbers provide insight into quark production mechanisms and time scales, collective motion, and re-scattering in the hadronic phase. The longitudinal and azimuthal widths of balance functions for charged kaons and charged pions are used to examine the two-wave quark production model proposed to explain quark-antiquark production within the QGP, which predicts a large increase in up and down quark pairs relative to strange quark pairs around the time of hadronization. Balance functions are also analyzed in small collision systems such as p-Pb and pp to study fragmentation effects and possible collective effects in high-multiplicity events. A comprehensive set of balance functions has been measured using the ALICE detector, including results for unidentified hadrons in Pb-Pb and p-Pb collisions at root s(NN) = 5.02 TeV, for charged pions in Pb-Pb collisions at root s(NN) = 2.76 TeV, p-Pb collisions at root s(NN) = 5.02 TeV and pp collisions at root s = 7 TeV, and for charged kaons in Pb-Pb collisions at root s(NN) = 2.76 TeV. The first balance function yield results are also presented.
Permanent Link: http://hdl.handle.net/11104/0294911