Hadron yields and the phase diagram of strongly interacting matter

Floris, M.

doi:10.1016/j.nuclphysa.2014.09.002

Cited by 137 publications

(132 citation statements)

References 95 publications

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“…Obviously, the freeze-out parameters extracted from the beam energy scan data [39] do not follow any of the LCPs. However, the discrepancy between the freeze-out parameters determined at the LHC [40] and the highest beam energy at RHIC [39] suggests that also these determinations are not consistent among each other.…”

Section: Lines Of Constant Physics To O(µ 4 B )mentioning

confidence: 89%

“…Table II). Data points show freeze-out temperatures determined by the STAR Collaboration in the BES at RHIC (squares) [39] and the ALICE Collaboration at the LHC (triangle) [40]. The circles denote hadronization temperatures obtained by comparing experimental data on particle yields with a hadronization model calculation [41].…”

Section: Lines Of Constant Physics To O(µ 4 B )mentioning

confidence: 99%

“…Also shown in Fig. 15 (left) are results on freeze-out parameters and hadronization temperatures extracted from particle yields measured in heavy ion experiments [39][40][41] by comparing data with model calculations based on the hadron resonance gas models. The region µ B /T ≤ 2 corresponds to beam energies √ s N N ≥ 11.4 GeV in the RHIC beam energy scan.…”

Section: Lines Of Constant Physics To O(µ 4 B )mentioning

confidence: 99%

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QCD equation of state to O(μB6) from lattice QCD

et al. 2017

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We calculated the QCD equation of state using Taylor expansions that include contributions from up to sixth order in the baryon, strangeness and electric charge chemical potentials. Calculations have been performed with the Highly Improved Staggered Quark action in the temperature range T ∈ [135 MeV, 330 MeV] using up to four different sets of lattice cut-offs corresponding to lattices of size N 3 σ × Nτ with aspect ratio Nσ/Nτ = 4 and Nτ = 6 − 16. The strange quark mass is tuned to its physical value and we use two strange to light quark mass ratios ms/m l = 20 and 27, which in the continuum limit correspond to a pion mass of about 160 MeV and 140 MeV respectively. Sixth-order results for Taylor expansion coefficients are used to estimate truncation errors of the fourth-order expansion. We show that truncation errors are small for baryon chemical potentials less then twice the temperature (µB ≤ 2T ). The fourth-order equation of state thus is suitable for the modeling of dense matter created in heavy ion collisions with center-of-mass energies down to √ sNN ∼ 12 GeV. We provide a parametrization of basic thermodynamic quantities that can be readily used in hydrodynamic simulation codes. The results on up to sixth order expansion coefficients of bulk thermodynamics are used for the calculation of lines of constant pressure, energy and entropy densities in the T -µB plane and are compared with the crossover line for the QCD chiral transition as well as with experimental results on freeze-out parameters in heavy ion collisions. These coefficients also provide estimates for the location of a possible critical point. We argue that results on sixth order expansion coefficients disfavor the existence of a critical point in the QCD phase diagram for µB/T ≤ 2 and T /Tc(µB = 0) > 0.9.

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Section: Lines Of Constant Physics To O(µ 4 B )mentioning

confidence: 89%

Section: Lines Of Constant Physics To O(µ 4 B )mentioning

confidence: 99%

Section: Lines Of Constant Physics To O(µ 4 B )mentioning

confidence: 99%

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QCD equation of state to O(μB6) from lattice QCD

et al. 2017

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“…Because pions are absolutely the most product in the collisions, the weighted average of effective temperatures is nearly the same as that for pion production. Obviously, in most cases, this "true" temperature is less than the expected critical temperature (130-165 MeV) of the QGP formation [37]. In central p-Pb collisions, the "true" temperature is the closest to the lower limit of the expected critical temperature.…”

Section: The Model and Calculationmentioning

confidence: 90%

Transverse momentum and pseudorapidity distributions of final-state particles and spatial structure pictures of an interacting system in p-Pb collisions at $\sqrt{s_{NN}} = 5.02$ TeV

2015

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Abstract:The transverse momentum and pseudorapidity distributions of final-state particles produced in proton-lead (p-Pb) collisions at center-of-mass energy per nucleon pair √ s N N = 5.02 TeV are studied in the framework of a multisource thermal model.Experimental results measured by the ALICE and CMS Collaborations are described by the Tsallis transverse momentum distribution and the two-cylinder pseudorapidity distribution. Based on the parameter values extracted from the transverse momentum and pseudorapidity distributions, some other quantities are extracted. Then, the structure pictures of interacting system at the stage of kinetic freeze-out in some spaces are obtained.

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“…Therefore, hadron properties have to be extracted from models based on effective Lagrangians. A phenomenological tool to characterize the system produced in Heavy-Ion Collisions (HIC) at various beam energies is the Statistical Hadronization Model (SHM) [2][3][4]. It allows to extract freeze-out parameters by fitting particle yields.…”

Section: Introductionmentioning

confidence: 99%

Studying Strangeness Production with HADES

Schuldes

2018

EPJ Web Conf.

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Abstract. The High-Acceptance DiElectron Spectrometer (HADES) operates in the 1 -2A GeV energy regime in fixed target experiments to explore baryon-rich strongly interacting matter in heavy-ion collisions at moderate temperatures with rare and penetrating probes. We present results on the production of strange hadrons below their respective NN threshold energy in Au+Au collisions at 1.23A GeV ( √ s NN = 2.4 GeV). Special emphasis is put on the enhanced feed-down contribution of φ mesons to the inclusive yield of K − and its implication on the measured spectral shape of K − . Furthermore, we investigate global properties of the system, confronting the measured hadron yields and transverse mass spectra with a Statistical Hadronization Model (SHM) and a blastwave parameterization, respectively. These supplement the world data of the chemical and kinetic freeze-out temperatures.

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Hadron yields and the phase diagram of strongly interacting matter

Cited by 137 publications

References 95 publications

QCD equation of state to O(μB6) from lattice QCD

QCD equation of state to O(μB6) from lattice QCD

Transverse momentum and pseudorapidity distributions of final-state particles and spatial structure pictures of an interacting system in p-Pb collisions at $\sqrt{s_{NN}} = 5.02$ TeV

Studying Strangeness Production with HADES

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