Event-by-event mean p_T fluctuations in pp and Pb-Pb collisions measured by the ALICE experiment at the LHC

Details Event-by-event mean p_T fluctuations in pp and Pb-Pb collisions measured by the ALICE experiment at the LHC Event-by-event mean p_T fluctuations in pp and Pb-Pb collisions measured by the ALICE experiment at the LHC

2011-07-21

arxiv.org/abs/1107.4327v2

J. Phys. G: Nucl. Part. Phys. 38 (2011) 124095

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 3 figures, proceedings to Quark Matter 2011; only minor changes in the new version (e.g. description of error bars of

Scientific paper

10.1088/0954-3899/38/12/124095

Non-statistical event-by-event fluctuations of the mean transverse momentum of charged particles in pp and Pb-Pb collisions are studied using the ALICE experiment at the LHC. Little collision energy dependence is observed in pp. The data indicate a common scaling behaviour with event multiplicity from pp to semi-central Pb-Pb collisions. In central Pb-Pb, the results deviate from this trend, exhibiting a significant reduction of the fluctuation strength. The results are compared with measurements in Au-Au collisions at lower energies and with Monte Carlo simulations.

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