AGeV/c in Pb+Au Collisions
نویسنده
چکیده
Abstract. Event-by-event fluctuations of mean pT and net charge in 40, 80, and 158 AGeV/c Pb+Au collisions are presented. The observed dynamical mean pT fluctuations in central events of about 1 % are very similar to results from RHIC. The centrality dependence of mean pT fluctuations at 158 AGeV/c shows a peculiar nonmonotonic pattern with respect to the extrapolation from the fluctuations measured in p+p collisions. Dynamical net charge fluctuations smaller than the charge conservation limit are observed. After correction for charge conservation, the measured fluctuation signal in central events is comparable to RHIC results.
منابع مشابه
Transverse Pressure and Strangeness Dynamics in Relativistic Heavy Ion Reactions
Transverse hadron spectra from proton-proton, proton-nucleus and nucleus-nucleus collisions from 2 AGeV to 21.3 ATeV are investigated within two independent transport approaches (HSD and UrQMD). For central Au+Au (Pb+Pb) collisions at energies above Elab ∼ 5 AGeV, the measured K transverse mass spectra have a larger inverse slope parameter than expected from the default calculations. The additi...
متن کاملLow-Mass Lepton Pair Production in Pb-Au Collisions at 40 AGeV
The CERES/NA45 experiment at the CERN SPS has previously measured ee pair production in 160 AGeV Pb-Au collisions. In the mass region m>0.2 GeV/c, an enhancement of 2.7±0.4(statist.)±0.5(syst.) compared to the expectation from known hadronic decay sources was observed. In the 40 AGeV data taken in 1999, an enhancement is again found; a preliminary analysis gives the even larger value of 4.5 ± 1...
متن کامل2 v 1 9 M ar 2 00 0 1 High - p ⊥ charged - pion production in Pb - Au Collisions at 158 AGeV / c
High-p⊥ charged-pion production in Pb-Au Collisions at 158 AGeV/c G. Agakichiev, R. Baur, P. Braun-Munzinger, A. Drees, S. Esumi, U. Faschingbauer, Z. Fraenkel , Ch. Fuchs, P. Glässel, C. P. de los Heros , P. Holl, Ch. Jung, B. Lenkeit, F. Messer, M. Messer, Y. Panebrattsev, A. Pfeiffer, J. Rak, I. Ravinovich , S. Razin, P. Rehak, M. Richter, N. Saveljic, J. Schukraft, S. Shimansky, W. Seipp, E...
متن کامل0 70 10 23 v 2 2 1 Ja n 20 07 Two particle azimuthal correlations at high transverse momentum in Pb - Au at 158
The analysis of two-particle azimuthal angular correlations at high transverse momentum from Pb+Au collisions at 158 AGeV/c at SPS reveals substantial modifications of the away-side peak as compared to the distributions from p+p reactions. The data recorded with the CERES Time-Projection Chamber, which provides excellent tracking efficiency, suggest that the observed modification of the back-to...
متن کامل0 70 10 23 v 1 1 6 Ja n 20 07 Two particle azimuthal correlations at high transverse momentum in Pb - Au at 158
The analysis of two-particle azimuthal angular correlations at high transverse momentum from Pb+Au collisions at 158 AGeV/c at SPS reveals substantial modifications of the away-side peak as compared to the distributions from p+p reactions. The data recorded with the CERES Time-Projection Chamber, which provides excellent tracking efficiency, suggest that the observed modification of the back-to...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004