p_T-fluctuations in high-energy p-p and A-A collisions

Abstract

The event-by-event p_T-fluctuations in proton-proton and central Pb-Pb collisions, which have been experimentally studied by means of the so-called Phi-measure, are analyzed. The contribution due to the correlation which couples the average p_T to the event multiplicity is computed. The correlation appears to be far too weak to explain the preliminary experimental value of Phi (p_T) in p-p interactions. The significance of the result is discussed.

5 pages, 2 figures, minor improvements

References in corpus (2)

• Event-by-event fluctuations of average transverse momentum in central Pb+Pb collisions at 158 GeV per nucleon
• Generalizing Phi-measure of event-by-event fluctuations in high-energy heavy-ion collisions

Cited by in corpus (9)

• Transverse Momentum Fluctuations in Nuclear Collisions at 158 AGeV
• Methods for the Study of Transverse Momentum Differential Correlations
• Multiplicity fluctuations in the string clustering approach
• Transverse momentum versus multiplicity fluctuations in high-energy nuclear collisions
• Strongly Intensive Measures for Transverse Momentum and Particle Number Fluctuations
• Charge Transfer Fluctuations as a Signal for QGP
• Saturation momentum scale extracted from semi-inclusive transverse spectra in high-energy pp collisions
• Strongly Intensive Measures for Particle Number Fluctuations: Effects of Hadronic Resonances
• Event-by-event mean $p_{\mathrm{T}}$ fluctuations and transverse size of color flux tube generated in $p$-$p$ collisions at $\sqrt{s}$=0.90TeV