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A selection of recent data referring to Pb+Pb collisions at the SPS CERN energy of 158 GeV per nucleon is presented which might describe the state of highly excited strongly interacting matter both above and below the deconfinement to…

High Energy Physics - Phenomenology · Physics 2009-10-31 Reinhard Stock

Energy dependence of quark transverse flow carries information about dynamical properties (equation of state, initial conditions) of deconfined matter produced in heavy ion collisions. We assume quark-antiquark matter formation in Pb+Pb…

Nuclear Theory · Physics 2009-11-10 P. Csizmadia , P. Levai

3pi- correlations from Pb+Pb collisions at 158 GeV/c per nucleon are presented as measured by the focusing spectrometer of the NA44 experiment at CERN. The three-body effect is found to be stronger for PbPb than for SPb. The two-dimensional…

Nuclear Experiment · Physics 2015-06-26 I. G. Bearden

An extended pion source, which can be temporarily created by a high energy nuclear collision, will also absorb and distort the outgoing pions. We discuss how this effect alters the interferometric pattern of the two-pion momentum…

Nuclear Theory · Physics 2009-09-25 M. -C. Chu , S. Gardner , T. Matsui , R. Seki

The phase transitions in a realistic system with triplet pairing, dense neutron matter, have been investigated. The spectrum of phases of the $^3P_2-^3F_2$ model, which adequately describes pairing in this system, is analytically…

Nuclear Theory · Physics 2008-11-26 V. A. Khodel , J. W. Clark , M. V. Zverev

We calculate thermal photon and neutral pion spectra in ultrarelativistic heavy-ion collisions in the framework of three-fluid hydrodynamics. Both spectra are quite sensitive to the equation of state used. In particular, within our model,…

High Energy Physics - Phenomenology · Physics 2009-09-25 A. Dumitru , U. Katscher , J. A. Maruhn , H. Stöcker , W. Greiner , D. H. Rischke

The program of NA61/SHINE allows for the investigation of the phase diagram of strongly interacting matter. The nature of the quark-hadron transition can be studied through analyzing the space-time structure of the hadron emission source…

Nuclear Experiment · Physics 2019-06-18 Barnabas Porfy

In preparation for the heavy ion program at the relativistic heavy ion collider (RHIC) $d$-Au collisions were designated as a control experiment for possible discovery of a quark-gluon plasma (QGP) in more-central Au-Au collisions, and…

High Energy Physics - Phenomenology · Physics 2020-01-14 Thomas A. Trainor

The invariant spectra of pi- mesons produced in (pi+/K+)p interactions at 250 GeV/c are analysed in the framework of the hydrodynamical model of three-dimensionally expanding cylindrically symmetric finite systems. A satisfactory…

High Energy Physics - Experiment · Physics 2016-08-31 NA22 Collaboration , N. M. Agababyan et al

We investigate two- and three-particle intensity correlation functions of pions in relativistic heavy ion collisions for different colliding energies. Based on three models of particle production, we analyze the degree to which the pion…

Nuclear Theory · Physics 2016-09-08 Kenji Morita , Shin Muroya , Hiroki Nakamura

The polarization of the $\Lambda$ and $\overline{\Lambda}$ hyperons along the beam direction has been measured in proton-lead (pPb) collisions at a center-of-mass energy per nucleon pair of 8.16 TeV. The data were obtained with the CMS…

Nuclear Experiment · Physics 2025-10-02 CMS Collaboration

The source radii, previously extracted by STAR Collaboration from the $p-\Lambda \oplus \bar{p}-\bar{\Lambda}$ and $\bar{p}-\Lambda \oplus p-\bar{\Lambda}$ correlation functions measured in 10% most central Au+Au collisions at top RHIC…

Nuclear Theory · Physics 2015-09-23 V. M. Shapoval , B. Erazmus , R. Lednicky , Yu. M. Sinyukov

A model-independent, three-dimensional source function for pion pairs has been extracted from Pb+Pb collisions at $\sqrt s_{NN}=17.3$ AGeV. The extracted sourc e exhibits long-range non-Gaussian tails in the directions of the pion-pair net…

Nuclear Experiment · Physics 2008-11-26 P. Chung , P. Danielewicz

We propose a resolution of the discrepancy between the proton yield predicted by the statistical hadronization approach and data on hadron production in ultra-relativistic nuclear collisions at the LHC. Applying the S-matrix formulation of…

High Energy Physics - Phenomenology · Physics 2019-04-03 Anton Andronic , Peter Braun-Munzinger , Bengt Friman , Pok Man Lo , Krzysztof Redlich , Johanna Stachel

We present the Yano-Koonin-Podgoretskii parametrisation of the correlation function. Compared to the conventionally used Cartesian parametrisation, this one provides more straightforward measurement of the duration of the emission process…

Nuclear Theory · Physics 2009-10-09 B. Tomasik , U. Heinz , U. A. Wiedemann , Y. -F. Wu

Recent LHC data on Pb+Pb reactions at sqrt(s_{NN})=2.7 TeV suggests that the p/pi is incompatible with thermal models. We explore several hadron ratios (K/pi, p/pi, Lambda/pi, Xi/pi) within a hydrodynamic model with hadronic after burner,…

Nuclear Theory · Physics 2013-01-29 Jan Steinheimer , Jörg Aichelin , Marcus Bleicher

Azimuthal correlations of hadrons with high transverse momenta serve as a measure to study the energy loss and the fragmentation pattern of jets emerging from hard parton-parton interactions in heavy ion collisions. Preliminary results from…

Nuclear Experiment · Physics 2019-08-14 Stefan Kniege , Mateusz Ploskon

The (3+1)-dimensional ideal hydrodynamics is used to simulate collisions of gold nuclei with bombarding energies from 1 to 160 GeV per nucleon. The initial state is represented by two cold Lorentz-boosted nuclei. Two equations of state:…

High Energy Physics - Phenomenology · Physics 2015-05-20 I. N. Mishustin , A. V. Merdeev , L. M. Satarov

Two-particle azimuthal correlations of high-pT hadrons can serve as a probe of interactions of partons with the dense medium produced in high-energy heavy-ion collisions. First NA49 results on such correlations are presented for central and…

Nuclear Experiment · Physics 2019-08-14 Marek Szuba

We present the results of three-dimensional femtoscopic analyses for charged and neutral kaons recorded by ALICE in Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 2.76 TeV. Femtoscopy is used to measure the space-time characteristics of…

Nuclear Experiment · Physics 2019-02-05 ALICE Collaboration
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