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The topological approach to baryon-antibaryon production in the chiral phase transition is numerically simulated for rapidly expanding hadronic systems. For that purpose the dynamics of the effective chiral field is implemented on a space -…

High Energy Physics - Phenomenology · Physics 2009-11-10 G. Holzwarth

Experimental data at RHIC and SPS energies suggest a systematic correlation between yield ratio $\bar{p}/p$ and $K^{-}/K^{+}$, which reveal some universality of hadron production in relativistic heavy ion collisions. We propose an…

Nuclear Theory · Physics 2013-09-02 Jun Song , Feng-lan Shao

Net proton and negative hadron spectra for central \PbPb collisions at 158 GeV per nucleon at the CERN SPS were measured and compared to spectra from lighter systems. Net baryon distributions were derived from those of net protons,…

Nuclear Experiment · Physics 2012-08-27 NA49 Collaboration

We provide an in-detail derivation through the $^3P_0$ pair creation model of the transition matrix for a baryon decaying into a meson-baryon system. The meson's analysis was conducted in Ref. [1] and we extend the same formalism to the…

High Energy Physics - Phenomenology · Physics 2024-04-30 T. Aguilar , A. Capelo-Astudillo , M. Conde-Correa , A. Duenas-Vidal , P. G. Ortega , J. Segovia

Various string models of mesons and baryons include a string carrying 2 or 3 massive points (quarks or antiquarks). Rotational states (planar uniform rotations) of these systems generate quasilinear Regge trajectories and may be used for…

High Energy Physics - Phenomenology · Physics 2013-05-20 G. S. Sharov

This paper examines the transverse momentum spectra of hadrons in the multiparticle production at LHC in the framework of the Quark-Gluon String Model (QGSM). It discusses the dependence of average pt on the masses of mesons and baryons at…

High Energy Physics - Phenomenology · Physics 2023-12-06 Olga I. Piskounova

One of the basic assumptions of the string model is that as a result of a DIS in nucleus a single string arises, which then breaks into hadrons. However the pomeron exchange considered in this work, leads to the production of two strings in…

High Energy Physics - Phenomenology · Physics 2008-11-26 N. Akopov , L. Grigoryan , Z. Akopov

Recent experimental observations on the `bulk' features of particle production at high (pseudo)rapidities will be reviewed. This kinematic region is of interest mostly because of its relevance to the theoretical description of initial state…

Nuclear Experiment · Physics 2015-06-26 Gábor I. Veres

The $\bar{\Omega}/\Omega$ ratio originating from string decays is predicted to be larger than unity in proton proton interactions at SPS energies ($E_{\rm lab}$=160 GeV). The anti-omega dominance increases with decreasing beam energy. This…

High Energy Physics - Phenomenology · Physics 2009-11-07 M. Bleicher , F. M. Liu , A. Keränen , J. Aichelin , S. A. Bass , F. Becattini , K. Redlich , K. Werner

We study the hadron production at finite values of temperature and baryon density by means of an effective relativistic mean-field model with the inclusion of the full octet of baryons, the Delta-isobar degrees of freedom and the lightest…

Nuclear Theory · Physics 2012-02-16 A. Lavagno

We consider the experimental data on yields of protons, strange $\Lambda^{\prime}$s, and multistrange baryons ($\Xi$, $\Omega$), and antibaryons production on nuclear targets, and the experimental ratios of multistrange to strange…

High Energy Physics - Phenomenology · Physics 2022-06-29 G. H. Arakelyan , C. Merino , Yu. M. Shabelski

We study the formation of baryons as composed of quarks and diquarks in hot and dense hadronic matter in a Nambu--Jona-Lasinio (NJL)--type model. We first solve the Dyson-Schwinger equation for the diquark propagator and then use this to…

Nuclear Theory · Physics 2015-05-19 Jin-cheng Wang , Qun Wang , Dirk H. Rischke

The process of secondary baryon production in pi(+-)p collisions at high energies in the central and forward fragmentation regions is considered in the framework of the Quark-Gluon String Model. The contribution of the string-junction…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. H. Arakelyan , C. Merino , Yu. M. Shabelski

The process of baryon production in K p collisions at high energies is considered in the framework of the Quark-Gluon String Model. The contribution of the string-junction mechanism to the strange baryon production is analysed. The results…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. H. Arakelyan , C. Merino , Yu. M. Shabelski

We consider the string breaking phenomenon within effective string models which purport to mimic QCD with two light flavors, with a special attention to baryon modes. We make some estimates of the string breaking distances at zero and…

High Energy Physics - Phenomenology · Physics 2020-05-13 Oleg Andreev

The production of antibaryons is calculated in a microscopic transport approach employing multiple meson fusion reactions according to detailed balance relations with respect to baryon-antibaryon annihilation. It is found that the…

Nuclear Theory · Physics 2009-11-07 W. Cassing

An empirical principle for the construction of a linear relationship between the total angular momentum and squared-mass of baryons is proposed. In order to examine linearity of the trajectories, a rigorous least-squares regression analysis…

High Energy Physics - Phenomenology · Physics 2012-08-08 S. V. Chekanov , B. B. Levchenko

The spectra of baryons at LHC can explain the features of the proton spectra in cosmic rays (CR). It seems important to study all baryon data that are available from collider experiments in wide range of energies. Transverse momentum…

High Energy Physics - Phenomenology · Physics 2018-11-12 Olga I. Piskounova

We present a new model for the hadronisation of multi-parton systems, in which colour correlations beyond leading $N_C$ are allowed to influence the formation of confining potentials (strings). The multiplet structure of $SU(3)$ is combined…

High Energy Physics - Phenomenology · Physics 2021-08-25 Jesper R. Christiansen , Peter Z. Skands

We classify the meson and baryon long lived resonances considering quarks with electric charge 5/3 and $-4/3$ (in units of $\vert e\vert$) predicted by some 3-3-1 models. Some of these exotic resonances have the usual electric charges…

High Energy Physics - Phenomenology · Physics 2017-10-25 G. De Conto , V. Pleitez