In this paper we continue the investigation of the effect of quantum number conservations of pions, kaons, and protons, with very high transverse momenta (up to 25 GeV/c), during parton fragmentation and hadronization in p-p and Pb-Pb collisions at LHC energies [1, 2]. The strength of the conservation effects are studied by identified two-particle correlations in Monte Carlo generated events in the mid-rapidity region (|η| < 1). The simulated p-p events were generated with PYTHIA 8 , using its main default settings, at √s = 200GeV, √s = 2.76TeV, √s = 7TeV, and √s = 14TeV. In parallel to this, HIJING 1.36  was used to generate Pb-Pb events at √sNN = 2.76 TeV with centralities 0 - 10%, 30 - 40% and 80 - 90%. The extracted identified associated hadron spectra for charged pion, kaon, and proton show identified trigger-hadron dependent splitting between oppositely charged associated particle species in any nucleus-nucleus collisions. The Pb-Pb data exhibits a peculiar splitting pattern as a function of the transverse momentum of the associated particle pT,assoc both on the near and away side that is different from the patterns observed in p-p collisions. The splitting shows smooth evolution with collision energy and event multiplicity in p-p collisions while in Pb-Pb collisions different trend were observed for kaons and protons.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - márc. 7 2017|
|Event||10th International Workshop on High-pT Physics in the RHIC/LHC Era - Nantes, France|
Duration: szept. 9 2014 → szept. 12 2014
ASJC Scopus subject areas
- Physics and Astronomy(all)