Resonance production in heavy-ion collisions at STAR

Abstract

Hadronic resonances are sensitive to the properties of a hot and dense medium created in a heavy ion collisions. During the hadronic phase, after hadronization of quark and gluons into hadrons, resonances are useful to determine the lifetime between chemical and thermal freeze-out, under the assumption that the re-scattering of the decay particles and the probability of regeneration of resonances from hadrons depends on the system properties and the resonance lifetime. The system size and energy dependence of resonance spectra and yields will be shown and discussed in the context of the lifetime and size of the hadronic phase. Elliptic flow measurement will extend the sensitivity of resonance yields to the partonic state through additional information on constituent quark scaling. We also explore a possible new technique to extract signals from the early, potentially chirally symmetric, stage through the selection of resonances from jets.

SQM2007 proceedings, 7 pages, 7 figures

References in corpus (8)

• Pion interferometry in Au+Au collisions at $\sqrt{{\mathrm{s}}_{{}_{\mathrm{NN}}}}$ = 200 GeV
• K(892)* Resonance Production in Au+Au and p+p Collisions at sqrt(sNN) = 200 GeV at RHIC
• Strange baryon resonance production in $\sqrt{s_{NN}}=200$ GeV $p+p$ and $Au+Au$ collisions
• Decomposition of Harmonic and Jet Contributions to Particle-pair Correlations at Ultra-relativistic Energies
• Space-Time Picture of Fragmentation in PYTHIA/JETSET for HERMES and RHIC
• Resonance production in heavy-ion collisions at STAR
• Strangeness and bulk freeze-out properties at RHIC
• K* production in Heavy Ion Collisions at RHIC

Cited by in corpus (10)

• Baryonic resonances close to the Kbar-N threshold: the case of Sigma(1385)^+ in pp collisions
• Examining the model dependence of the determination of kinetic freeze-out temperature and transverse flow velocity in small collision system
• Resonances as a possible observable of hot and dense nuclear matter
• Elliptic flow of charged pions, protons and strange particles emitted in Pb+Au collisions at top SPS energy
• Resonance production in heavy-ion collisions at STAR
• High $p_T$ resonances as a possibility to explore hot and dense nuclear matter
• Enhanced Production of Delta(1230) and Sigma(1385) Resonances
• Resonance Production in Heavy Ion Collisions: Suppression of $\Lambda (1520)$ and Enhancement of $\Sigma (1385)$
• Strangeness, Charm and Beauty in Quark Matter: SQM 2007 Experimental Overview
• Particle production in matter at extreme conditions