Tracing the origin of azimuthal gluon correlations in the color glass condensate
Lappi, T., Schenke, B., Schlichting, S., & Venugopalan, R. (2016). Tracing the origin of azimuthal gluon correlations in the color glass condensate. Journal of High Energy Physics, 2016 (1), 61. doi:10.1007/JHEP01(2016)061 Retrieved from http://arxiv.org/abs/1509.03499
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Journal of High Energy PhysicsDate
2016Copyright
© The Authors. This is an open access article funded by SCOAP3.
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 vn 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.