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The deuteron disintegration process with the emission of fast proton in the vicinity of the kinematical boundary of the reaction, when Feynman variable $x\to 2$, is studied. The consideration is fulfilled in the framework of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. A. Braun , V. V. Vechernin

We introduce a transport approach which combines partonic and hadronic degrees of freedom on an equal footing and discuss the resulting reaction dynamics. The initial parton dynamics is modeled in the framework of the parton cascade model,…

Nuclear Theory · Physics 2009-10-31 S. A. Bass , M. Hofmann , M. Bleicher , L. Bravina , E. Zabrodin , H. Stoecker , W. Greiner

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 consider a spherical volume of hot and dense hadronic matter (fireball) expanding into a vacuum. It is assumed that initially the fireball matter is in local thermal and chemical equilibrium with vanishing collective velocity. The time…

Nuclear Theory · Physics 2013-05-30 L. M. Satarov , A. B. Larionov , I. N. Mishustin

The formation of hadrons is a fundamental process in nature that can be investigated at particle colliders. As several recent findings demonstrate, with $\mathrm{e^+e^-}$ collisions as a "vacuum-like" reference at one extreme, and central…

High Energy Physics - Phenomenology · Physics 2025-01-13 J. Altmann , A. Dubla , V. Greco , A. Rossi , P. Skands

Quasi parton distribution functions (QPDFs) are defined in terms of QCD fields at spacelike separations evaluated in matrix elements of hadrons moving with velocity $v$. These objects can be studied in lattice QCD. In the limit when $v$…

High Energy Physics - Phenomenology · Physics 2026-05-13 Fatma Aslan , Asli Tandogan , Peter Schweitzer

This Ph.D.~thesis is divided into two distinct parts. The first part focuses on hard exclusive scattering processes in Quantum Chromodynamics (QCD) at high energies, while the second part delves into spin phenomena at the Large Hadron…

High Energy Physics - Phenomenology · Physics 2023-08-28 Zhite Yu

The stability of an expanding parton plasma is analyzed within quasi-particle models. The effective mass of the parton is calculated self-consistently from a gap equation which is either obtained from the Nambu Jona-Lasinio Lagrangian or…

Nuclear Theory · Physics 2007-05-23 P. Bozek , Y. B. He , J. Huefner

A Linearized Boltzmann Transport (LBT) model coupled with hydrodynamical background is established to describe the evolution of jet shower partons and medium excitations in high energy heavy-ion collisions. We extend the LBT model to…

Nuclear Theory · Physics 2016-07-27 Shanshan Cao , Tan Luo , Guang-You Qin , Xin-Nian Wang

The complete QCD evolution equation for factorial moments in quark and gluon jets is numerically solved with initial conditions at threshold by fully taking into account the energy-momentum conservation law. Within the picture of Local…

High Energy Physics - Phenomenology · Physics 2007-05-23 Sergio Lupia

We study e^+e^- pair production in proton-proton and central Pb+Pb collisions at sqrt(s_NN)=2.76 TeV within two models: an extended statistical hadronization model (SHM) and the Parton-Hadron-String Dynamics (PHSD) transport approach. We…

Nuclear Theory · Physics 2013-01-28 O. Linnyk , W. Cassing , J. Manninen , E. L. Bratkovskaya , P. B. Gossiaux , J. Aichelin , T. Song , C. M. Ko

Dilepton production in In+In collisions at 158 AGeV is studied within the microscopic parton-hadron-string dynamics (PHSD) transport approach that incorporates explicit partonic degrees-of-freedom, dynamical hadronization as well as the…

Nuclear Theory · Physics 2015-05-28 O. Linnyk , E. L. Bratkovskaya , V. Ozvenchuk , W. Cassing , C. M. Ko

We investigate photon emission at the hadronization stage from a quark-gluon plasma created in relativistic heavy-ion collisions. A recombination-model picture suggests that a quark and an antiquark bind into a meson state in hadronization,…

Nuclear Theory · Physics 2022-10-05 Hirotsugu Fujii , Kazunori Itakura , Katsunori Miyachi , Chiho Nonaka

Quarkonium production in high-energy heavy-ion collisions remains a key probe of the quark-gluon plasma formed in these reactions, but the development of a fully integrated nonperturbative approach remains a challenge. Toward this end, we…

Nuclear Theory · Physics 2026-04-22 Biaogang Wu , Ralf Rapp

When hadrons scatter at high energies, strong color fields, whose dynamics is described by quantum chromodynamics (QCD), are generated at the interaction point. If one represents these fields in terms of partons (quarks and gluons), the…

High Energy Physics - Phenomenology · Physics 2012-06-27 S. Munier

A formalism for hadron production at high \pt in heavy-ion collisions has been developed such that all partons hadronize by recombination. The fragmentation of a hard parton is accounted for by the recombination of shower partons that it…

Nuclear Theory · Physics 2009-11-10 Rudolph C. Hwa , C. B. Yang

We develop a comprehensive model for heavy-quark evolution in a realistic QGP, from their production in the initial collision to hadronic freeze-out. Heavy-quark transport is described by a Langevin approach including medium-induced…

High Energy Physics - Phenomenology · Physics 2025-10-13 Yu Fu , Tharun Krishna , Weiyao Ke , Steffen A. Bass , Ralf Rapp

We present a unified approach to the transition from hadronic matter to quark matter where hadrons are treated as bound states of quarks which dissociate at high densities due to quark Pauli blocking. The newly developed approach makes use…

High Energy Physics - Phenomenology · Physics 2025-07-15 David Blaschke , Oleksii Ivanytskyi , Gerd Röpke

A fireball model with time evolution based on transport calculations is used to examine the dilepton emission rate of an ultra-relativistic heavy-ion collision. We assume a transition from hadronic matter to a quark-gluon plasma at a…

High Energy Physics - Phenomenology · Physics 2009-10-31 R. A. Schneider , W. Weise

The parton recombination model has turned out to be a valuable tool to describe hadronization in high energy heavy ion collisions. I review the model and revisit recent progress in our understanding of hadron correlations. I also discuss…

Nuclear Theory · Physics 2009-11-11 Rainer J. Fries