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The kaon, the lightest hadron containing a strangeness quark, is very peculiar. It is a Nambu-Goldstone boson, but significantly heavier than the pion. As a result, its interaction with a matter particle, such as the nucleon or a…

High Energy Physics - Phenomenology · Physics 2026-03-24 Li-Sheng Geng , Ming-Zhu liu , Jia-Ming Xie

The study of energy and multiplicity dependence of strange hadron production in proton-proton collisions provides a powerful tool to understand similarities and differences between small and large collision systems. In order to better…

High Energy Physics - Experiment · Physics 2021-11-02 Francesca Ercolessi

The hadron resonance gas (HRG) model is often believed to correctly describe the confined phase of QCD. This assumption is the basis of many phenomenological works on QCD thermodynamics and of the analysis of hadron yields in relativistic…

Results for the energy dependence of the elementary kaon production cross sections in proton-proton collisions are reported. Calculations are performed within an extended version of the resonance model which was used for the previous…

Nuclear Theory · Physics 2010-02-17 K. Tsushima , A. Sibirtsev , A. W. Thomas

We reconsider thermal conditions of the central fireball presumed to be the source of abundantly produced strange (anti-)baryons in S -> W collisions at 200 GeV A. We show that it is possible to completely fix the freeze-out temperature of…

High Energy Physics - Phenomenology · Physics 2009-10-30 Jean Letessier , Jan Rafelski , Ahmed Tounsi

Short-lived hadronic resonances are unique tools for studying the hadron-gas phase that is created in the late stages of relativistic heavy-ion collisions. Measurements of the yield ratios between resonances and the corresponding stable…

Nuclear Experiment · Physics 2024-01-25 Johanna Lömker

Heavy ion collisions (HIC) at high energies are excellent ways for producing heavy hadrons and composite particles. With upgraded detectors at RHIC and LHC, it has become possible to measure hadrons beyond their ground states. Therefore,…

The production of (multi-)strange hadrons is measured at midrapidity in proton--proton collisions at $\sqrt{s} = 13$ TeV as a function of the local charged-particle multiplicity in the pseudorapidity interval ${|\eta|<0.5}$ and of the…

Nuclear Experiment · Physics 2025-05-19 ALICE Collaboration

Here we present a physically transparent generalization of the multicomponent Van der Waals equation of state in the grand canonical ensemble. For the one-component case the third and fourth virial coefficients are calculated analytically.…

High Energy Physics - Phenomenology · Physics 2018-08-01 V. V. Sagun , K. A. Bugaev , A. I. Ivanytskyi , I. P. Yakimenko , E. G. Nikonov , A. V. Taranenko , C. Greiner , D. B. Blaschke , G. M. Zinovjev

We study string fragmentation in high multiplicity proton-proton collisions in a model where the string tension fluctuates. These fluctuations produce exponential pion spectra which are fitted to the transverse momentum distributions of…

High Energy Physics - Phenomenology · Physics 2020-06-30 H. J. Pirner , B. Z. Kopeliovich , K. Reygers

Appropriate combinations of up to fourth order cumulants of net strangeness fluctuations and their correlations with net baryon number and electric charge fluctuations, obtained from lattice QCD calculations, have been used to probe the…

Measured hadron yields from relativistic nuclear collisions can be equally well understood in two physically distinct models, namely a static thermal hadronic source vs.~a time-dependent, nonequilibrium hadronization off a quark-gluon…

Nuclear Theory · Physics 2011-09-13 C. Spieles , H. Stoecker , C. Greiner

We compute the mid-rapidity densities of pions, kaons, baryons and antibaryons in $Au$-$Au$ collisions at $\sqrt{s} =$ 130 GeV in the Dual Parton Model supplemented with final state interaction (comovers interaction). The ratios…

Nuclear Theory · Physics 2009-01-06 A. Capella , C. A. Salgado , D. Sousa

In these lectures I review the foundations and the applications of the statistical hadronization model to elementary and relativistic heavy ion collisions. The role of strangeness production and the general interpretation of results is…

High Energy Physics - Phenomenology · Physics 2009-01-26 F. Becattini

We investigate the possibilities of using measurements in present and future experiments on heavy ion collisions to answer some longstanding problems in hadronic physics, namely identifying hadronic molecular states and exotic hadrons with…

We present a model of fast hadronization of constituent quark matter in relativistic heavy ion collisions based on rate equations and capture cross sections in non-relativistic potential. We utilize a thermodynamically consistent approach…

High Energy Physics - Phenomenology · Physics 2007-05-23 T. S. Biro , P. Levai , J. Zimanyi , C. T. Traxler

We present results on spectra of pions, kaons and (anti)protons from a study of heavy ion collisions using the perturbative QCD + saturation model to calculate the production of initial (transverse) energy and baryon number followed by a…

Nuclear Theory · Physics 2009-11-07 K. J. Eskola , H. Niemi , P. V. Ruuskanen , S. S. Rasanen

We study strangeness-changing response functions as an alternative description of hypernuclear structure. Hypernuclear states are treated in the same manner as any other conventional nuclear excitation that emerges from the response of the…

Nuclear Theory · Physics 2008-11-26 Horst Mueller , Jorge Piekarewicz

The freezeout conditions in proton-proton collisions at $\sqrt{s_{\textrm{NN}}}= 200$, $900$ and $7000$ GeV have been extracted by fits to the mean hadron yields at mid-rapidity within the framework of the statistical model of an ideal gas…

Nuclear Theory · Physics 2017-01-26 Sabita Das , Debadeepti Mishra , Sandeep Chatterjee , Bedangadas Mohanty

Nuclear experiments near and below the threshold of hyperon production have shown that the production of Kaons is a sensitive probe for the dense QCD equation of state. At beam energies up to 1.5AGeV, strangeness production can probe the…

Nuclear Theory · Physics 2026-02-09 Jan Steinheimer , Tom Reichert , Marcus Bleicher