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arXiv · 1509.03499

Tracing the origin of azimuthal gluon correlations in the color glass condensate

T. Lappi·B. Schenke·S. Schlichting·R. Venugopalan
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Abstract

We examine the origins of azimuthal correlations observed in high energy proton-nucleus collisions by considering the simple example of the scattering of uncorrelated partons off color fields in a large nucleus. We demonstrate how the physics of fluctuating color fields in the color glass condensate (CGC) effective theory generates these azimuthal multiparticle correlations and compute the corresponding Fourier coefficients v_n within different CGC approximation schemes. We discuss in detail the qualitative and quantitative differences between the different schemes. We will show how a recently introduced color field domain model that captures key features of the observed azimuthal correlations can be understood in the CGC effective theory as a model of non-Gaussian correlations in the target nucleus.

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T. Lappi, B. Schenke, S. Schlichting, R. Venugopalan. 2015-09-11. Tracing the origin of azimuthal gluon correlations in the color glass condensate. https://doi.org/10.1007/jhep01(2016)061

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