Thermal phenomenology of hadrons from 200<i>A</i>GeV S+S collisions

Schnedermann, Ekkard; Sollfrank, Josef; Heinz, Ulrich

doi:10.1103/physrevc.48.2462

Cited by 1,111 publications

(1,369 citation statements)

References 41 publications

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“…In heavy ion collisions the radial expansion can be extracted through a blast-wave analysis, where, a simultaneous fit to identified hadron p T distributions for each multiplicity bin is done. This parameterization assumes a locally thermalized medium, expanding collectively with a common velocity field and undergoing an instantaneous common freeze-out [33]. The simultaneous fit to all particle species under consideration can provide insight on the common kinetic freeze-out properties of the system.…”

Section: Results From the Blast-wave Analysis And Comparison With Expmentioning

confidence: 99%

Mid-rapidity charged hadron transverse spherocity in pp collisions simulated with Pythia

2015

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The pp collisions have been studied for a long time, however, there are still some effects which are not completely understood, such as the long range angular correlations and the flow patterns in high multiplicity events, which were recently discovered at the LHC. In a recent work it was demonstrated that in Pythia 8, multi-parton interactions and color reconnection can give some of the observed effects similar to the collective flow well known from heavy-ion collisions. Now using the same model, a study based on mid-rapidity charged hadron transverse spherocity is presented. The main purpose of this work is to show that a differential study combining multiplicity and event shapes opens the possibility to understand better the features of data, specially at high multiplicity.

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Section: Results From the Blast-wave Analysis And Comparison With Expmentioning

confidence: 99%

Mid-rapidity charged hadron transverse spherocity in pp collisions simulated with Pythia

2015

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“…Once the system reaches chemical freeze-out and kinetic freeze-out after hadronization, particle yields and transverse momentum spectra (p T ) get fixed, respectively. The chemical freeze-out temperature (T ch ) is obtained by fitting the particle yield or particle ratios with thermal model [11], whereas the kinetic freeze-out temperature (T kin ) is obtained from the blast-wave model fitting of the particle p T spectra [12]. Figure 2 left shows the energy dependence of the chemical and kinetic freeze-out temperature T ch and T kin for central heavy-ion collisions from different experiments [13].…”

Section: Freeze-out Conditions and Transverse Dynamicsmentioning

confidence: 99%

Exploring the QCD Phase Structure with Beam Energy Scan in Heavy-ion Collisions

Luo¹

2016

Nuclear Physics A

115

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Beam energy scan programs in heavy-ion collisions aim to explore the QCD phase structure at high baryon density. Sensitive observables are applied to probe the signatures of the QCD phase transition and critical point in heavy-ion collisions at RHIC and SPS. Intriguing structures, such as dip, peak and oscillation, have been observed in the energy dependence of various observables. In this paper, an overview is given and corresponding physics implications will be discussed for the experimental highlights from the beam energy scan programs at the STAR, PHENIX and NA61/SHINE experiments. Furthermore, the beam energy scan phase II at RHIC (2019-2020) and other future experimental facilities for studying the physics at low energies will be also discussed.

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“…The particle spectra can be used to obtain the kinetic freeze-out (a state when the spectral shapes of particles get fixed) conditions using the Blast Wave (BW) model [11]. The BW model is used to simultaneously fit the π, K, p spectra and the two relevant extracted parameters are kinetic freeze-out temperature T kin and average flow velocity β .…”

Section: Accessing Qcd Phase Diagrammentioning

confidence: 99%

STAR Results from the RHIC Beam Energy Scan-I

Kumar

2013

Nuclear Physics A

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The Beam Energy Scan (BES) program is being pursued at RHIC to study the QCD phase diagram, and search for the possible QCD phase boundary and possible QCD critical point. The data for Phase-I of the BES program have been collected for Au+Au collisions at center-of-mass energies ( √ s NN ) of 7.7, 11.5, 19.6, 27, and 39 GeV. These collision energies allowed the STAR experiment to cover a wide range of baryon chemical potential µ B (100-400 MeV) in the QCD phase diagram. We report on several interesting results from the BES Phase-I covering the high net-baryon density region. These results shed light on particle production mechanism and freezeout conditions, first-order phase transition and "turn-off" of QGP signatures, and existence of a critical point in the phase diagram. Finally, we give an outlook for the future BES Phase-II program and a possible fixed target program at STAR.

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Thermal phenomenology of hadrons from 200AGeV S+S collisions

Cited by 1,111 publications

References 41 publications

Mid-rapidity charged hadron transverse spherocity in pp collisions simulated with Pythia

Mid-rapidity charged hadron transverse spherocity in pp collisions simulated with Pythia

Exploring the QCD Phase Structure with Beam Energy Scan in Heavy-ion Collisions

STAR Results from the RHIC Beam Energy Scan-I

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