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Color-glass condensate

About: Color-glass condensate is a research topic. Over the lifetime, 885 publications have been published within this topic receiving 35169 citations.


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Journal ArticleDOI
TL;DR: In this paper, a modified form of the Kharzeev-Levin-Nardi (KLN) approach for nuclear collisions is introduced, which preserves factorization, and the saturation scale is bound from below by that for a single nucleon.
Abstract: We introduce a modified form of the Kharzeev-Levin-Nardi (KLN) approach for nuclear collisions. The new ansatz for the unintegrated gluon distribution function preserves factorization, and the saturation scale is bound from below by that for a single nucleon. It also reproduces the correct scaling with the number of collisions at high transverse momentum. The corresponding Monte Carlo implementation allows us to account for fluctuations of the hard sources (nucleons) in the transverse plane. We compute various definitions of the eccentricity within the new approach, which are relevant for the interpretation of the elliptic flow. Our approach predicts breaking of the scaling of the eccentricity with the Glauber eccentricity at the level of about 30%.

153 citations

Journal ArticleDOI
TL;DR: In this paper, the authors obtained a very good description of RHIC data on single inclusive hadron production at forward rapidities in both p+p and d+Au collisions.

152 citations

Journal ArticleDOI
TL;DR: In this article, the authors show that the centrality and system-size dependence of elliptic flow measured at the BNL Relativistic Heavy Ion Collider (RHIC) are fully described by a simple model based on eccentricity scaling and incomplete thermalization.
Abstract: We show that the centrality and system-size dependence of elliptic flow measured at the BNL Relativistic Heavy Ion Collider (RHIC) are fully described by a simple model based on eccentricity scaling and incomplete thermalization. We argue that the elliptic flow is at least 25% below the (ideal) ``hydrodynamic limit,'' even for the most central Au-Au collisions. This lack of perfect equilibration allows for estimates of the effective parton cross section in the quark-gluon plasma and of its viscosity to entropy density ratio. We also show how the initial conditions affect the transport coefficients and thermodynamic quantities extracted from the data, in particular, the viscosity and the speed of sound.

151 citations

Journal ArticleDOI
TL;DR: A small x color glass condensate (CGC)+ nonrelativistic QCD (NRQCD) formalism is employed to compute J/ψ production at low p(⊥) in proton-proton collisions at collider energies, where very good agreement is obtained for total cross sections, rapidity distributions, and low momentum p(→) distributions.
Abstract: We employ a small x Color Glass Condensate + Non-Relativistic QCD (NRQCD) formalism to compute J/ψ production at low p⊥ in proton-proton collisions at collider energies. Very good agreement is obtained for total cross-sections, rapidity distributions and low momentum p⊥ distributions. Similar agreement is obtained for ψ' production. We observe an overlap region in p⊥ where our results match smoothly to those obtained in a next-to-leading order (NLO) collinearly factorized NRQCD formalism. The relative contribution of color singlet and color octet contributions can be quantified in the CGC+NRQCD framework, with the former contributing approximately 10% of the total cross-section.

149 citations

Journal ArticleDOI
TL;DR: In this paper, the authors calculate production cross sections of a forward quark-gluon pair and two gluons at mid-rapidity in Deep Inelastic Scattering and in high energy proton-nucleus collisions.
Abstract: We calculate production cross sections of a forward quark-gluon pair and of two gluons at mid-rapidity in Deep Inelastic Scattering and in high energy proton-nucleus collisions. The calculation is performed in the framework of the Color Glass Condensate formalism. We first calculate the cross sections in the quasi-classical approximation, which includes multiple rescatterings in the target. We then proceed to include the effects of non-linear small-x evolution in the production cross sections. It is interesting to note that our result for the two-gluon production cross section appears to be in direct violation of AGK cutting rules, which is the first example of such violation in QCD. The calculated quark-gluon and gluon-gluon production cross sections can be used to construct theoretical predictions for two-particle azimuthal correlations at RHIC and LHC (I^{p(d)A}) as well as for Deep Inelastic Scattering experiments at HERA and eRHIC.

148 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202321
202244
202127
202022
201951
201833