Event-by-event fluctuations of the mean transverse momentum in 40, 80, and 158 A GeV/c Pb-Au collisions
CERES Collaboration
Abstract
Measurements of event-by-event fluctuations of the mean transverse momentum in Pb-Au collisions at 40, 80, and 158 A GeV/c are presented. A significant excess of mean pT fluctuations at mid-rapidity is observed over the expectation from statistically independent particle emission. The results are somewhat smaller than recent measurements at RHIC. A possible non-monotonic behaviour of the mean pT fluctuations as function of collision energy, which may have indicated that the system has passed the critical point of the QCD phase diagram in the range of muB under investigation, has not been observed. The centrality dependence of mean pT fluctuations in Pb-Au is consistent with an extrapolation from pp collisions assuming that the non-statistical fluctuations scale with multiplicity. The results are compared to calculations by the RQMD and UrQMD event generators.
Create a lesson
Related papers
Gallium Anomaly and Solar Neutrinos
Steven R. Elliott, R. G. Hamish Robertson
Experimental review on global polarization and spin alignment in heavy-ion collisions
Takafumi Niida
Physics with Radioactive Ion Beams at the Nuclear Science Laboratory
W. S. Porter, D. W. Bardayan, M. Brodeur et al.
16O(p,γ)17F Reaction and the C and O Isotopic Ratios in Red Giant Branch Stars
D. Robb, P. McGlynn, M. Aliotta et al.
Probing the production mechanisms of virtual photons at RHIC
STAR Collaboration
The 3He(α,γ)7Be γ-ray angular distribution: measured, and calculated by effective field theory
S. Turkat, P. Hempel, X. Zhang et al.