Title: ПРАВИЛА ОФОРМЛЕНИЯ ТЕЗИСОВ КОНФЕРЕНЦИИ ВНКСФ-7
Author: Sergey Trapeznikov
Last saved by: Svetlana
Company: Saint-Petersburg State University

Specialization: 010700/17 Theoretical and mathematical physics
Program: 28 Theory of elementary particles interactions and quantum field theory
Head of program: M.A. Braun
Department of High Energy and Elementary particles Physics
Scientific supervisor: M.V. Kompaniets
Reviewer: V.P. Kondratiev

Analysis of the net charge fluctuations and correlations
in the ALICE experimental data at LHC
I. S. Vorobyev

ALICE experiment gives us the unique opportunity to study heavy ions collisions at high LHC energies. In such collisions nuclear matter is believed to undergo a phase transition to quark-gluon plasma. In the search for such a deconfined phase, a lot of signatures has been suggested, one of those is based on information about the event-by-event net-charge fluctuations. Measurements of net charge fluctuations in PbPb collisions at √S=2.76 TeV using the dynamical net charge fluctuations measure ν+-dyn are presented. Centrality class and pseudorapidity window dependencies are investigated.
Also we examine net charge correlations in separated pseudorapidity windows. The SPbSU team now actively searches for the long-range correlations, which can be considered as one of the signs of quark-gluon strings fusion. As quark-gluon string is an extended object in the rapidity space, i.e. contributes by fragmentation to wide rapidity range, one can expect appearance of the correlations between observable quantities in distant rapidity intervals. Correlations between different values such as net charge, charged particles multiplicity, positively and negatively charged particles multiplicities in different distant pseudorapidity windows are investigated for various centrality classes.

List of publications:
1. I. Vorobyev, Investigation of the dependence of the number of binary interactions and the number of participants on the class of centrality in ultrarelativistic heavy ion collisions // Conference proceedings, International Student Conference “Science and Progress”. St. Petersburg, 2011.
2. ALICE Physics Week Conference, Frascati, Italy, 15-20 of April 2012, report «Net charge long-range correlations investigation in ALICE experiment».