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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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TL;DR: In this paper, the color glass condensate formalism was introduced and the signatures of the condensates were discussed in structure functions, single particle and two particle production in DIS and proton-nucleus collisions.
Abstract: We give a brief introduction to small x QCD and the color glass condensate formalism. We discuss the signatures of the color glass condensate in structure functions, single particle and two particle production in DIS and proton-nucleus collisions.
1 citations
TL;DR: In this paper, an analytical first-principles calculation of the two-point correlator of the divergence of the Chern-Simons current at proper time was performed, which characterizes the early fluctuations of axial charge density in the plane transverse to the collision axis.
Abstract: The early-time evolution of the system generated in ultra-relativistic heavy ion collisions is dominated by the presence of strong color fields known as Glasma fields. These can be described following the classical approach embodied in the Color Glass Condensate effective theory, which approximates QCD in the high gluon density regime. In this framework we perform an analytical first-principles calculation of the two-point correlator of the divergence of the Chern-Simons current at proper time $\tau\!=\!0^+$, which characterizes the early fluctuations of axial charge density in the plane transverse to the collision axis. This object plays a crucial role in the description of anomalous transport phenomena such as the Chiral Magnetic Effect. We compare our results to those obtained under the Glasma Graph approximation, which assumes gluon field correlators to obey Gaussian statistics. While this approach proves to be equivalent to the exact calculation in the limit of short transverse separations, important differences arise at larger distances, where our expression displays a remarkably slower fall-off than the Glasma Graph result ($1/r^4$ vs.\ $1/r^8$ power-law decay). This discrepancy emerges from the non-linear dynamics mapping the Gaussianly-distributed color source densities onto the Glasma fields, encoded in the classical Yang-Mills equations. Our results support the conclusions reached in a previous work, where we found indications that the color screening of correlations in the transverse plane occurs at relatively large distances.
1 citations
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TL;DR: In this paper, the early stages of a heavy ion collision at high energy in the Color Glass Condensate framework are described and a short review of their work can be found in Section 2.
Abstract: In this short review, we present the description of the early stages of a heavy ion collision at high energy in the Color Glass Condensate framework.
1 citations
TL;DR: By means of the AKK08 fragmentation function, the net-proton transverse momentum (p(T)) spectra in A + A collisions are studied with two phenomenological models based on the Color Glass Condensate formalism.
Abstract: By means of the AKK08 fragmentation function, the net-proton transverse momentum (p(T)) spectra in A + A collisions are studied with two phenomenological models based on the Color Glass Condensate formalism. After a chi(2) analysis of the experimental data from BRAHMS, the normalization constant C is extracted at RHIC energies of root s(NN) = 62.4 and 200 GeV, and the theoretical results of the net-proton p(T) spectra at selected rapidities are also given. It is shown that the theoretical results are in good agreement with the experimental data. Finally, assuming the constant C should have an exponent dependence of root s(NN), we also predict the theoretical results of net-proton PT spectra at LHC energies of root s(NN) = 2.76, 3.94, and 5.52 TeV.
1 citations
TL;DR: In this article, the authors studied the gluon content of a large nucleus in the semi-classical McLerran-Venugopalan model and in the high energy limit as given by the quantum evolution of the color glass condensate.
Abstract: We study the gluon content of a large nucleus (i) in the semi-classical McLerran-Venugopalan model and (ii) in the high-energy limit as given by the quantum evolution of the color glass condensate. We give a simple and qualitative description of the Cronin effect and high- pT suppression in proton-nucleus collisions.
1 citations