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I review some important results from RHIC experiments. They were obtained in a unique environment for studying QCD bulk matter at temperatures and densities that surpass the limits where hadrons can exist as individual entities, raising the…

Nuclear Experiment · Physics 2009-01-08 Rachid Nouicer

It is argued that the expected turn-down in $x- Q^2$ of the cross sections (structure functions $F_2(x,Q^2)$), assumed to result from the saturation of parton densities in the nucleon, is related to a phase transition from the (almost)…

High Energy Physics - Phenomenology · Physics 2009-10-06 L. L. Jenkovszky , S. M. Troshin , N. E. Tyurin

An analysis of hadron abundances in heavy ion collisions from SPS to RHIC energy within the statistical-thermal model is presented. Pb--Pb collisions at 40 A GeV are analysed for the first time here. Unlike stated in similar recent studies,…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Becattini

At ultra-relativistic energies the minijet production in heavy-ion collisions becomes sensitive to semi-hard parton rescatterings in the initial stages of the process. As a result global characteristics of the event, like the initial…

High Energy Physics - Phenomenology · Physics 2009-11-07 Alberto Accardi

The study of fluctuations of particle multiplicities in relativistic heavy-ion reactions has drawn much attention in recent years, because they have been proposed as a probe for underlying dynamics and possible formation of quark-gluon…

Nuclear Theory · Physics 2011-07-19 F. Becattini , A. Keranen , L. Ferroni , T. Gabbriellini

The gluon dominance model presents a description of multiparticle production in proton-proton collisions and proton-antiproton annihilation. The collective behavior of secondary particles in $pp$-interactions at 70 GeV/c and higher is…

High Energy Physics - Phenomenology · Physics 2007-05-23 P. F. Ermolov , E. S. Kokoulina , E. A. Kuraev , A. V. Kutov , V. A. Nikitin , A. A. Pankov , I. A. Roufanov , N. K. Zhidkov

A dense parton system is expected to be formed in the early stage of relativistic heavy-ion collisions at RHIC energies and above. The probability of a quark gluon plasma production and the resulting strength of its signatures depends…

High Energy Physics - Phenomenology · Physics 2010-11-30 Victor Goncalves

We present a review of parton saturation/Color Glass Condensate physics in the context of deuteron-gold ($d+Au$) collisions at RHIC. Color Glass Condensate physics is a universal description of all high energy hadronic and nuclear…

High Energy Physics - Phenomenology · Physics 2011-01-25 Jamal Jalilian-Marian , Yuri V. Kovchegov

This is a short presentation of our talks given at eRHIC Workshop at the BNL. We give here a status report of our attempts to understand how gluon saturation will manifest itself in deep inelastic scattering with nuclei. This summary…

High Energy Physics - Phenomenology · Physics 2007-05-23 Eugene Levin , Uri Maor

In this paper, we investigate the multiplicity fluctuations of charged particles observed in high-energy nuclear collisions and relate them to the size of hadronizing systems which happen during such processes. We use the average…

Nuclear Theory · Physics 2023-03-30 A. Bazgir , V. Z. Reyna Ortiz , M. Rybczynski , U. Shah , Z. Wlodarczyk

The explanation of the suppression of high-pT hadron yields at RHIC in terms of jet-quenching implies that the multiplicity distributions of particles inside a jet and jet-like particle correlations differ strongly in nucleus-nucleus…

High Energy Physics - Phenomenology · Physics 2011-09-13 Nicolas Borghini

The rapid thermalization of quarks and gluons in the initial stages of relativistic heavy-ion collisions is treated using analytic solutions of a nonlinear diffusion equation with schematic initial conditions, and for gluons with boundary…

High Energy Physics - Phenomenology · Physics 2020-05-04 Georg Wolschin

The average charged hadron multiplicities induced by top quark decays are calculated in pQCD at LHC energies. Different modes of top production are considered. Proposed measurements can be used as an additional test of pQCD calculations…

High Energy Physics - Phenomenology · Physics 2015-05-28 R. A. Ryutin

It is known that the proton is overpopulated by gluons and is characterized as a highly dense medium at high collision energies. From this, the formation of a new state of matter called Color Glass Condensate (CGC) is expected, and an open…

High Energy Physics - Phenomenology · Physics 2024-12-18 Yuri N. Lima , Andre V. Giannini , Victor P. B. Goncalves

We examine carefully bottomonia hadroproduction in proton colliders, especially focusing on the LHC, as a way of probing the gluon density in protons. To this end we develop some previous work, getting quantitative predictions and…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. L. Domenech-Garret , M. A. Sanchis-Lozano , S. Wolf

At very high energies, the high parton densities (characterized by a semi-hard saturation scale \Lambda_s) ensure that parton distributions can be described by a classical effective field theory with remarkable properties analogous to those…

High Energy Physics - Phenomenology · Physics 2010-11-30 Alex Krasnitz , Raju Venugopalan

We study properties of high energy factorisable gluon densities focusing on saturation effects. In particular we show that the property of saturation of unintegrated gluon density allows for introduction of thermodynamical entropy…

High Energy Physics - Phenomenology · Physics 2015-03-19 Krzysztof Kutak

The preliminary data on hadron multiplicities measured in central Pb+Pb collisions at 158A GeV/c are analyzed. The ideal hadron gas model fails to give a reasonable explanation to the Pb+Pb data sets. We study the possible effects of pion…

Nuclear Theory · Physics 2011-05-05 Granddon D. Yen , Mark I. Gorenstein

We estimate the energy density pile-up at mid-rapidity in central Pb+Pb collisions from 2 - 200 GeV/nucleon. The energy density is decomposed into hadronic and partonic contributions. A detailed analysis of the collision dynamics in the…

Nuclear Theory · Physics 2009-10-31 H. Weber , C. Ernst , M. Bleicher , L. Bravina , H. Stoecker , W. Greiner , C. Spieles , S. A. Bass

We analyze the centrality dependence of thermal parameters describing hadron multiplicities, hadron spectra and dilepton spectra in heavy-ion collisions at SPS and RHIC energies.

High Energy Physics - Phenomenology · Physics 2009-09-29 B. Kampfer , J. Cleymans , K. Gallmeister , S. Wheaton