Tracing the origin of azimuthal gluon correlations in the color glass condensate
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 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.
Main Authors
Format
Articles
Research article
Published
2016
Series
Subjects
Publication in research information system
Publisher
Springer Berlin Heidelberg
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-201602011376Käytä tätä linkitykseen.
Review status
Peer reviewed
ISSN
1127-2236
DOI
https://doi.org/10.1007/JHEP01(2016)061
Language
English
Published in
Journal of High Energy Physics
Citation
- 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), Article 61. https://doi.org/10.1007/JHEP01(2016)061
License
Funder(s)
Academy of Finland
Funding program(s)
Akatemiatutkija, SA
Academy Research Fellow, AoF
Additional information about funding
We would like to thank A. Dumitru, A. Kovner and V. Skokov for useful discussions. T. L. is supported by the Academy of Finland, projects 267321 and 273464. BPS, SS, and RV are supported under DOE Contract No. DE-SC0012704. This research used computing resources of CSC – IT Center for Science in Espoo, Finland and of the National Energy
Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. RV would like to thank the Institut f¨ur Theoretische Physik, Heidelberg, for kind hospitality and the Excellence Initiative of Heidelberg University for their support. SS gratefully acknowledges
a Goldhaber Distinguished Fellowship from Brookhaven Science Associates. BPS is supported by a DOE Office of Science Early Career Award. TL thanks the BNL for hospitality during this work.
Copyright© The Authors. This is an open access article funded by SCOAP3.