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The STAR experiment at the Relativistic Heavy-Ion Collider has performed measurements of high transverse momentum particle production in ultra-relativistic heavy-ion collisions. High-pT hadrons are generated from hard parton scatterings…

Nuclear Experiment · Physics 2007-05-23 A. Mischke

We have studied the probability of two succinct particle production mechanisms, likely to occur in the transition from the deconfined medium produced in RHIC and LHC heavy ion collisions back to the hadron gas, which is abundant at lower…

High Energy Physics - Phenomenology · Physics 2012-05-17 Rene Bellwied

By using a parametrization of the non-linear Walecka model which takes into account the binding energy of different hyperons, we present a study of particle production yields measured in central Au-Au collision at RHIC. Two sets of…

High Energy Physics - Phenomenology · Physics 2009-06-23 M. Chiapparini , M. E. Bracco , A. Delfino , M. Malheiro , D. P. Menezes , C. Providencia

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 have revisited several interesting questions on how the rapidity-odd directed flow is developed in relativistic $^{197}$Au+$^{197}$Au collisions at $\sqrt{s_{NN}}$ = 200 and 39 GeV based on a multiphase transport model. As the partonic…

Nuclear Theory · Physics 2017-12-04 Chong-Qiang Guo , Chun-Jian Zhang , Jun Xu

We address the dilepton production from the parton interactions in the early stage of relativistic heavy-ion collisions within the parton-hadron-string dynamics (PHSD) off-shell transport approach. The description of partons in PHSD is…

Nuclear Theory · Physics 2011-09-30 O. Linnyk , E. L. Bratkovskaya , J. Manninen , W. Cassing

Production of low-$p_T$ (soft) hadronic particles in high energy collisions constitutes a significant corner of special interests and problems, as the perturbative quantum chromodynamics (pQCD) does not work in this region. We have probed…

High Energy Physics - Phenomenology · Physics 2011-08-03 A. C. Das Ghosh , Goutam Sau , S. K. Biswas , S. Bhattacharyya

Particle production in two-photon interactions at hadronic collisions is becoming increasingly relevant in the LHC physics programme as a way to improve our understanding of the Standard Model and search for signals of New Physics. A key…

High Energy Physics - Phenomenology · Physics 2021-05-05 G. Gil da Silveira , V. P. Goncalves , G. G. Vargas Veronez

We estimate the production of electromagnetic radiation (real and virtual photons) from the early, pre-equilibrium, stage of relativistic heavy-ion collisions. The parton dynamics are obtained as a solution of the Boltzmann equation in the…

High Energy Physics - Phenomenology · Physics 2021-02-10 Jessica Churchill , Li Yan , Sangyong Jeon , Charles Gale

We report the first measurement of strange ($\Lambda$) and anti-strange ($\bar{\Lambda}$) baryon production from $\sqrt{s_{_{NN}}}=130$ GeV Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC). Rapidity density and transverse mass…

Nuclear Experiment · Physics 2008-11-26 STAR Collaboration , C. Adler

Multiparticle production processes in $pp$ collisions at the central rapidity region are usually considered to be divided into independent "soft" and "hard" components. The first is described by exponential (thermal-like) transverse…

High Energy Physics - Phenomenology · Physics 2015-06-23 Cheuk-Yin Wong , Grzegorz Wilk , Leonardo J. L. Cirto , Constantino Tsallis

Prompt photon production in hadronic collisions at the RHIC and the LHC energies is investigated within the QCD color dipole approach. Predictions for the nuclear modification factor in $pA$ collisions are evaluated based on parton…

High Energy Physics - Phenomenology · Physics 2020-11-11 G. Sampaio dos Santos , G. Gil da Silveira , M. V. T. Machado

In nuclear collisions at relativistic energies, matter is created which resembles closely the matter that filled all space until about 15 microseconds after the big bang. Here we summarize selected aspects of the research that led to the…

Nuclear Theory · Physics 2025-06-06 Peter Braun-Munzinger , Krzysztof Redlich , Johanna Stachel

A QCD phase transition may reflect in a inhomogeneous decoupling surface of hadrons produced in relativistic heavy-ion collisions. We show that due to the non-linear dependence of the particle densities on the temperature and…

Nuclear Theory · Physics 2009-11-11 A. Dumitru , L. Portugal , D. Zschiesche

Employing the so-called hybrid formalism, we calculate the cross section of inclusive hadron production in proton-proton collisions at forward rapidity in small-$x$ formalism at one-loop order. For the case of hadron production at forward…

High Energy Physics - Phenomenology · Physics 2016-12-07 Kazuhiro Watanabe , Bo-Wen Xiao

We determine rapidity asymmetry in the production of charged pions, protons and anti-protons for large transverse momentum (pT) for d+Au collisions at \sqrt s_NN = 200 GeV. The identified hadrons are measured in the rapidity regions |y| <…

Nuclear Experiment · Physics 2012-08-27 STAR Collaboration

Long range forward-backward multiplicity correlations have been measured with the STAR detector for Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV . Strong long range correlations are observed in central Au+Au collisions. Based on the Dual…

Nuclear Experiment · Physics 2010-11-26 B. K. Srivastava , R. P. Scharenberg , T. J. Tarnowsky

A pQCD-based model for parton production and equilibration in ultrarelativistic heavy-ion collisions is reviewed. The model combines pQCD processes including initial and final state radiations together with string phenomenology for…

High Energy Physics - Phenomenology · Physics 2015-06-25 Xin-Nian Wang

The higher order moments of the net-baryon distributions in relativistic heavy ion collisions are useful probes for the QCD critical point and fluctuations. We study the net-proton distributions and their moments in a simple model which…

Nuclear Theory · Physics 2013-05-29 C. B. Yang , X. Wang

New experiments to measure neutrinos in the far-forward region at the Large Hadron Collider (LHC) are under design or already in preparation. Two of them, FASER$\nu$ and SND@LHC, are expected to be active during Run 3 and have the potential…

High Energy Physics - Phenomenology · Physics 2022-07-04 Weidong Bai , Milind Diwan , Maria Vittoria Garzelli , Yu Seon Jeong , Fnu Karan Kumar , Mary Hall Reno