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

Abstract

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.

4 pages, 3 figures, proceedings to Quark Matter 2011; only minor changes in the new version (e.g. description of error bars of fig.3 in more detail, ref.5 updated), figures not changed, this is the published version

References in corpus (1)

• Bulk Properties of Pb-Pb collisions at sqrt(sNN) = 2.76 TeV measured by ALICE

Cited by in corpus (4)

• Fluctuation Probes of Early-Time Correlations in Nuclear Collisions
• Local Multiplicity Fluctuations as a Signature of Critical Hadronization at LHC
• Saturation momentum scale extracted from semi-inclusive transverse spectra in high-energy pp collisions
• Rapidity dependence of mean transverse momentum fluctuation and decorrelation in baryon-dense medium