Contribution to a conference proceedings/Internal Report

PUBDB-2015-05393

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Measuring the gluon distribution in nuclei at an Electron-Ion Collider

Lamont, M. A. C. (Corresponding author)

2014
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-04/44

Report No.: DESY-PROC-2014-04

Abstract: Despite the successes of the HERA accelerator, where much information was gained on the structure of the nucleon, data on the structure of the nucleus at moderate-to-small $x$ remains elusive, as only fixed-target high-$x$ data currently exist. The small-$x$ region, however, is of great interest. The nucleon structure in this region is dominated by gluons which show a rapid rise with decreasing $x$. At low-$x$, this growth must be tamed and the gluon distribution will be saturated. However, only tantalising hints of this have been observed so far. Therefore, the construction of an Electron-Ion Collider (EIC), colliding polarised electrons with polarised protons and also a wide variety of nuclei, will allow an exploration of the region of small-$x$ in great detail, answering questions on both the spatial and momentum distributions of gluons and sea quarks in nuclei. In particular, the saturation region is more accessible in nuclei due to the amplification of the saturation scale with nuclear size ($Q_S$ $\propto$ A$^{1/3}$). In this paper I present the current status of measuring the gluon distribution in nuclei in $e+$A collisions at an EIC.

Keyword(s): nucleus: size ; gluon: momentum spectrum ; scale: saturation ; quark: sea ; structure ; electron nucleus ; nucleon ; DESY HERA Stor ; accelerator ; positron ; electron

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)
2. LHC/CMS Experiment (CMS)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. No specific instrument

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Database coverage:

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings/Internal Report Schmidt, A. (Editor)>Extern* ; Sander, C. (Editor)DESY*
Proceedings, 20th International Conference on Particles and Nuclei (PANIC 14)
2014Panic2014, Panic2014, HamburgHamburg, Germany, 25 Aug 2014 - 29 Aug 20142014-08-252014-08-29 Hamburg : Deutsches Elektronen-Synchrotron, DESY 1-754 (2014) [10.3204/DESY-PROC-2014-04]2014     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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