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The Color Glass Condensate provides a systematic power counting of initial state effects in high energy QCD. We briefly discuss in this framework quark and gluon production in high energy collisions.

High Energy Physics - Phenomenology · Physics 2011-01-25 Francois Gelis , Raju Venugopalan

Forward particle production and correlation measurements at RHIC can probe low-$x$ gluons. The suppression observed in back-to-back forward $\pi^{0}$+forward $\pi^{0}$ correlations at STAR in central d+Au collisions at STAR is consistent…

Nuclear Experiment · Physics 2013-05-14 Xuan Li , the STAR Collaboration

In this letter we update our predictions for exclusive $J/\Psi$ and $\Upsilon$ photoproduction in proton-proton and nucleus - nucleus collisions at the Run 2 LHC energies obtained with the color dipole formalism and considering the impact…

High Energy Physics - Phenomenology · Physics 2017-03-22 V. P. Goncalves , B. D. Moreira , F. S. Navarra

The hydrokinetic model is applied to restore the initial conditions and space-time picture of the matter evolution in central Au+Au collisions at the top RHIC energy. The analysis is based on the detailed reproduction of the pion and kaon…

Nuclear Theory · Physics 2011-03-29 Iu. A. Karpenko , Yu. M. Sinyukov

The directed flow of identified particles can serve as a sensitive tool for investigating the interactions during initial and final states in heavy ion collisions. This study examines the rapidity-odd directed flow ($v_{1}$) and its slope…

Nuclear Theory · Physics 2024-04-16 Aswini Kumar Sahoo , Prabhupada Dixit , Md Nasim , Subhash Singha

We compute total and differential elastic cross sections of high-energy hadronic collisions in the loop-loop correlation model that provides a unified description of hadron-hadron, photon-hadron, and photon-photon reactions. The impact…

High Energy Physics - Phenomenology · Physics 2007-05-23 Arif I. Shoshi , Frank D. Steffen

We modified the gluon saturation model by rescaling the momentum fraction according to saturation momentum and introduced the Cooper-Frye hydrodynamic evolution to systematically study the pseudo-rapidity distributions of final charged…

High Energy Physics - Phenomenology · Physics 2014-11-21 Xin-Bin Wei , Sheng-Qin Feng

We review the theoretical and experimental progress in the Glauber model of multiple nucleon and/or parton scatterings, after the last 10--15 years of operation with proton and nuclear beams at the CERN Large Hadron Collider (LHC) and with…

High Energy Physics - Phenomenology · Physics 2021-09-15 David d'Enterria , Constantin Loizides

RHIC data on high-$p_T$ hadron production display strong suppression in a wide rapidity region, indicating strong induced energy loss for both transversally and longitudinally traveling partons. We investigate the interplay of energy loss…

High Energy Physics - Phenomenology · Physics 2009-11-11 G. G. Barnafoldi , P. Levai , G. Papp , G. Fai

Applying the HSD transport approach to charmonium dynamics within the 'hadronic comover model' and the 'QGP melting scenario', we show that the suppression pattern seen at RHIC cannot be explained by the interaction with baryons, comoving…

Nuclear Theory · Physics 2008-11-26 O. Linnyk , E. L. Bratkovskaya , W. Cassing , H. Stoecker

We argue that gluon saturation effects may be visible in Large Hadron Collider (LHC) data. We look at the centrality dependence of the away-side peak of two-particle correlations measured in p-Pb collisions, using both ALICE data at…

High Energy Physics - Phenomenology · Physics 2019-02-20 Giuliano Giacalone , Cyrille Marquet

Mid-rapidity azimuthal correlations probe di-jets originating mainly from gluon-gluon hard-scattering. Measurements of such correlations have revealed significant (gluon-)jet modification in central Au+Au collisions. Azimuthal correlations…

Nuclear Experiment · Physics 2008-11-26 Fuqiang Wang

We present a phenomenological approach (EPOS), based on the parton model, but going much beyond, and try to understand proton-proton and deuteron-gold collisions, in particular the transverse momentum results from all the four RHIC…

High Energy Physics - Phenomenology · Physics 2009-11-11 Klaus Werner , Fu-Ming Liu , Tanguy Pierog

We provide the first calculation of two-gluon production at mid-rapidity in ultra-peripheral collisions in the Color Glass Condensate framework. To estimate systematic uncertainty associated with poor understanding of the wave function of…

High Energy Physics - Phenomenology · Physics 2022-12-28 Haowu Duan , Alexander Kovner , Vladimir V. Skokov

We extend previous work on high energy nuclear collisions in the Color Glass Condensate model to study collisions of finite ultrarelativistic nuclei. The changes implemented include a) imposition of color neutrality at the nucleon level and…

High Energy Physics - Phenomenology · Physics 2009-07-09 Alex Krasnitz , Yasushi Nara , Raju Venugopalan

We discuss the empirical evidence for a universal Color Glass Condensate and outline prospects for further studies at future colliders. Some ramifications for initial conditions in heavy ion collisions are pointed out.

High Energy Physics - Phenomenology · Physics 2007-07-16 Raju Venugopalan

At high energy, the gluon distribution in nuclei reaches large densities and eventually saturates due to recombinations, that play an important role in heavy ion collisions at RHIC and the LHC. The Color Glass Condensate provides a…

High Energy Physics - Phenomenology · Physics 2015-05-30 Francois Gelis

The helicity correlation of two back-to-back hadrons is a powerful tool that makes it possible to probe the longitudinal spin transfer, $G_{1L}$, in unpolarized hadronic collisions. In this work, we investigate the helicity correlation of…

High Energy Physics - Phenomenology · Physics 2024-10-30 Zhao-Xuan Chen , Hui Dong , Shu-Yi Wei

Precise experimental information on hyperon-nucleon interactions is scarce but of paramount importance to our understanding of the inner structure of compact stars. In this letter, we report the first experimental results of correlation…

Nuclear Experiment · Physics 2025-11-20 STAR Collaboration

The production of jets, and high momentum hadrons from jets, produced in deuteron ($d$)-$Au$ collisions at the relativistic heavy-ion collider (RHIC) and proton ($p$)-$Pb$ collisions at the large hadron collider (LHC) are studied as a…

Nuclear Theory · Physics 2018-05-16 Michael Kordell , Abhijit Majumder