Recent results from Pb-Au collisions at 158 GeV/c per nucleon obtained with the CERES spectrometer

Abstract

During the 1996 lead run time, CERES has accumulated 42 million events, corresponding to a factor of 5 more statistics than in 1995 and 2.5 million events of a special photon-run. We report on the results of the low-mass e${}^{+}$e${}^{-}$-pair analysis. Since the most critical item is the poor signal-to-background ratio we also discuss the understanding of this background, in absolute terms, with the help of a detailed Monte Carlo simulation. We show preliminary results of the photon analysis and summarize the results of the hadron analysis preliminarily reported on already at QM'97

arXiv comment10 pages, 9 figures, Proceedings of the XIV Int. Conf. on Nucleus-Nucleus Collisions,Quark Matter 99, Torino, Italy, May 10 - 15, 1999

References in corpus (2)

• Low-mass e+e- pair production in 158 A GeV Pb-Au collisions at the CERN SPS, its dependence on multiplicity and transverse momentum
• Hadronic Expansion Dynamics in Central Pb+Pb Collisions at 158 GeV per Nucleon

Cited by in corpus (46)

• New method for measuring azimuthal distributions in nucleus-nucleus collisions
• rho^0 Production and Possible Modification in Au+Au and p+p Collisions at sqrt(s_NN) = 200 GeV
• Enhanced Production of Low-Mass Electron Pairs in 40 AGeV Pb-Au Collisions at the CERN SPS
• Phase transitions in the early and the present Universe
• e+e--pair production in Pb-Au collisions at 158 GeV per nucleon
• Nucleon Resonance Transition Couplings to Vector Mesons
• Is the analysis of flow at the CERN SPS reliable?
• Hadronic Spectral Functions in Nuclear Matter
• Evidence for a New State of Matter: An Assessment of the Results from the CERN Lead Beam Programme
• Properties of $\rho$ and $\omega$ Mesons at Finite Temperature and Density as Inferred from Experiment
• eta in the nuclear medium within a chiral unitary approach
• Low Mass Dimuons Produced in Relativistic Nuclear Collisions
• Chiral approach to the rho meson in nuclear matter
• D mesons and charmonium states in asymmetric nuclear matter at finite temperatures
• D-mesons and charmonium states in hot isospin asymmetric strange hadronic matter
• Thermal rho and sigma mesons from chiral symmetry and unitarity
• Dileptons and Photons from Coarse-Grained Microscopic Dynamics and Hydrodynamics Compared to Experimental Data
• The spectral function of the omega meson in nuclear matter from a coupled-channel resonance model
• Dimuon transverse momentum spectra as a tool to characterize the emission region in heavy-ion collisions
• Hadron Spectrum in a Two-Colour Baryon-Rich Medium
• First measurement of the rho spectral function in nuclear collisions
• Finite Temperature Pion Scattering to one-loop in Chiral Perturbation Theory
• Mass and Width of the Rho Meson in a Nuclear Medium from Brown-Rho Scaling and QCD Sum Rules
• Limits of Confinement: The First 15 Years of Ultra-Relativistic Heavy Ion Studies
• Near-threshold $\omega$ and $\varphi$ meson productions in $pp$ collisions
• Latest Results from CERES/NA45
• A unique parametrization of the shapes of secondary dilepton spectra observed in central heavy-ion collisions at CERN-SPS energies
• The Search for the QGP: A Critical Appraisal
• Non-perturbative finite $T$ broadening of the $\rho$ meson and dilepton emission in heavy ion-collisions
• Heavy Scalar, Vector and Axial-Vector Mesons in Hot and Dense Nuclear Medium
• Indication for ${\pi }^{+}{\pi }^{-}$ scattering in $p+p$ collisions at $\sqrt{s_{{}_{NN}}}=$200 GeV
• The SPS Heavy Ion Programme
• Finite temperature pion vector form factors in Chiral Perturbation Theory
• Properties of Cosmic Ray Interactions at PeV Energies
• Short-range Effects on Nuclear Pairing
• Lepton-pair production in nuclear collisions - past, present, future
• Thermal Parameters in Heavy Ion Collisions at SPS and RHIC: Centrality Dependence
• What does the rho-meson do? In-medium mass shift scenarios versus hadronic model calculations
• Relativistic Heavy-Ion Physics: Experimental Overview
• Dileptons from hot heavy static photons
• Dielectron Production in Heavy Ion Collisions at 158 GeV/c per Nucleon
• Pion damping width from SU(2) x SU(2) NJL model
• $\rho$ - meson spectral function in hot nuclear matter
• Semihard scattering unraveled from collective dynamics at $\sqrt{s}$=17 GeV
• Statistical hadronization phenomenology in heavy ion collisions at SPS and RHIC energies
• Chiral unitary theory: application to nuclear problems