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An analysis is presented of the expectations of the thermal model for particle production in collisions of small nuclei. The maxima observed in particle ratios of strange particles to pions as a function of beam energy in heavy ion…

Nuclear Theory · Physics 2016-09-14 J. Cleymans , B. Hippolyte , H. Oeschler , K. Redlich , N. Sharma

Within the statistical model, the net strangeness conservation and incomplete total strangeness equilibration lead to the suppression of strange particle multiplicities. Furthermore, suppression effects appear to be stronger in small…

Nuclear Theory · Physics 2014-05-09 M. I. Gorenstein , W. Greiner , A. Rustamov

We discuss the status of thermal model descriptions of particle ratios in central nucleus-nucleus collisions at ultra-relativistic energy. An alternative to the ``Cleymans-Redlich'' interpretation of the freeze-out trajectory is given in…

Nuclear Theory · Physics 2016-09-08 P. Braun-Munzinger , J. Stachel

The system-size dependence of particle production in heavy-ion collisions at the top SPS energy is analyzed in terms of the statistical model. A systematic comparison is made of two suppression mechanisms that quantify strange particle…

High Energy Physics - Phenomenology · Physics 2008-11-26 I. Kraus , J. Cleymans , H. Oeschler , K. Redlich , S. Wheaton

Emission of pi, K, phi and Lambda was measured in near-central C+C and Si+Si collisions at 158 AGeV beam energy. Together with earlier data for p+p, S+S and Pb+Pb, the system-size dependence of relative strangeness production in…

Nuclear Experiment · Physics 2008-11-26 NA49 collaboration , C. Alt

We argue that the shape of the system-size dependence of strangeness production in nucleus-nucleus collisions can be understood in a picture that is based on the formation of clusters of overlapping strings. A string percolation model…

High Energy Physics - Phenomenology · Physics 2008-11-26 C. Hoehne , F. Puehlhofer , R. Stock

Thermal models are very useful in the understanding of particle production in general and especially in the case of strangeness. We summarize the assumptions which go into a thermal model calculation and which differ in the application of…

Nuclear Theory · Physics 2008-11-26 Josef Sollfrank

Particle production in p+p and central Pb+Pb collisions at LHC is discussed in the context of the statistical thermal model. For heavy-ion collisions, predictions of various particle ratios are presented. The sensitivity of several ratios…

High Energy Physics - Phenomenology · Physics 2009-09-30 I. Kraus , J. Cleymans , H. Oeschler , K. Redlich , S Wheaton

The assumption that the production of quark-antiquark pairs and their sequential string-breaking taking place through the event horizon of the color confinement determines freezeout temperature and gives a plausible interpretation of the…

General Physics · Physics 2017-01-17 Abdel Nasser Tawfik , Hayam Yassin , Eman R. Abo Elyazeed

A great many observables seen in intermediate energy heavy ion collisions can be explained on the basis of statistical equilibrium. Calculations based on statistical equilibrium can be implemented in microcanonical ensemble (energy and…

Nuclear Theory · Physics 2009-11-10 C. B. Das , S. Das Gupta , W. G. Lynch , A. Z. Mekjian , M. B. Tsang

A systematic study is performed of fully integrated particle multiplicities in central Au-Au and Pb-Pb collisions at beam momenta of 1.7A GeV, 11.6A GeV (Au-Au) and 158$A$ GeV (Pb-Pb) by using a statistical-thermal model. The close…

High Energy Physics - Phenomenology · Physics 2009-10-31 F. Becattini , J. Cleymans , A. Keranen , E Suhonen , K. Redlich

An enhanced production of strange particles per pion in heavy ion collisions compared to elementary p+p interactions was observed in Pb+Pb reactions at the CERN SPS. New results obtained on small colliding systems, C+C and Si+Si, also show…

Nuclear Experiment · Physics 2009-11-10 I. Kraus

We propose a simple model of production of strange baryons and antibaryons in nuclear collisions at the CERN SPS. The model takes into account both the increase of strangeness production in collisions of lighter ions and a possibility of…

High Energy Physics - Phenomenology · Physics 2014-11-17 Roman Lietava , Jan Pisut , Neva Pisutova , Petr Zavada

Production probabilities for strange clusters and strange matter in Au+Au collisions at AGS energy are obtained in the thermal fireball model. The only parameters of the model, the baryon chemical potential and temperature, were determined…

Nuclear Theory · Physics 2009-10-28 P. Braun-Munzinger , J. Stachel

Thermal models are commonly used to interpret heavy-ion data on particle yields and spectra and to extract the conditions of chemical and thermal freeze-out in heavy-ion collisions. I discuss the usefulness and limitations of such thermal…

Nuclear Theory · Physics 2008-11-26 Ulrich Heinz

The results of the WA97 collaboration for strange particle production at mid-rapidity in Pb--Pb collisions at 158 GeV A/c at CERN display a strong strangeness enhancement with system size at mid-rapidity which is dependent on the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Sahal Yacoob , Jean Cleymans

Strange particle production is an important experimental observable that allows the study of the strongly interacting matter created in relativistic heavy-ion collisions. The STAR experiment at RHIC has a unique capability of measuring…

Nuclear Experiment · Physics 2019-08-13 Jun Takahashi

The thermal model is commonly used in two different ways for the description of hadron production in ultra-relativistic heavy ion collision. One is the application of the thermal model to 4pi integrated data and the other is the thermal…

Nuclear Theory · Physics 2008-11-26 J. Sollfrank

An effective model with constituent quarks as fundamental degrees of freedom is used to predict the relative strangeness production pattern in both high energy elementary and heavy ion collisions. The basic picture is that of the…

High Energy Physics - Phenomenology · Physics 2009-11-07 F. Becattini , G. Pettini

The canonical effects on strangeness and light nuclei production in high energy collisions are investigated, with a particular focus on low multiplicity events observed in small collision systems at the Large Hadron Collider (LHC), and also…

High Energy Physics - Phenomenology · Physics 2025-03-05 Natasha Sharma
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