Latest results from NA60

Abstract

The NA60 experiment has measured the production of muon pairs and of charged particles in In+In collisions at a beam energy of 158 AGeV. For invariant dimuon masses below the phi the space-time averaged rho spectral function was isolated by a novel procedure. It shows a strong broadening but essentially no shift in mass. The production of J/psi was measured as a function of the collision centrality. As in previous experiments studying Pb+Pb collisions an anomalous supression is observed, setting in at approximately 90 participant nucleons. Using the charged particles the reaction plane was reconstructed. The elliptic flow of charged particles increases with pt showing a saturation for pt > 2GeV/c. For the first time azimuthal distributions for J/psi are shown.

9 pages, 11 figures, talk given at the conference "Strangeness in Quark Matter 2006 (SQM2006)", March 2006, Los Angeles, USA, accepted for publication in Journal of Physics G

References in corpus (15)

• Methods for analyzing anisotropic flow in relativistic nuclear collisions
• Elliptic Flow of Identified Hadrons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• First Measurement of the rho Spectral Function in High-Energy Nuclear Collisions
• Directed and elliptic flow of charged pions and protons in Pb+Pb collisions at 40 and 158A GeV
• A new measurement of J/psi suppression in Pb-Pb collisions at 158 GeV per nucleon
• Rho Meson Propagation and Dilepton Enhancement in Hot Hadronic Matter
• Enhancement of low-mass dileptons in heavy-ion collisions
• Low-mass e+e- pair production in 158 A GeV Pb-Au collisions at the CERN SPS, its dependence on multiplicity and transverse momentum
• On the Manifestation of Chiral Symmetry in Nuclei and Dense Nuclear Matter
• Medium Modifications of the Rho Meson at CERN/SPS Energies
• e+e--pair production in Pb-Au collisions at 158 GeV per nucleon
• Effects of HBT correlations on flow measurements
• Intermediate-mass dilepton spectra and the role of secondary hadronic processes in heavy-ion collisions
• Intermediate-mass dilepton production in heavy-ion collisions at 200A GeV
• Strange Particle Production and Elliptic Flow from CERES

Cited by in corpus (8)

• Open charm in nuclear matter at finite temperature
• Open and hidden charm in proton-nucleus and heavy-ion collisions
• Charmonium dynamics in nucleus-nucleus collisions at SPS and FAIR energies
• Evidence for non-hadronic interactions of charm degrees of freedom in heavy-ion collisions at relativistic energies
• Charmonium dynamics in Au+Au collisions at sqrt(S)=200 GeV
• Possibility for $J/\Psi$ suppression in high multiplicity proton-proton collisions at $\sqrt{s_{NN}}=7$TeV
• Charmonium dynamics in heavy ion collisions
• SQM 2006: Theory Summary and Perspectives