Journal
PHYSICS LETTERS B
Volume 703, Issue 3, Pages 325-330Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2011.08.011
Keywords
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Funding
- Academy of Finland [126604, 141555]
- computing resources from CSC-IT Center for Science in Espoo, Finland
- Academy of Finland (AKA) [141555, 126604, 141555, 126604] Funding Source: Academy of Finland (AKA)
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The JIMWLK equation with a daughter dipole running coupling is solved numerically, starting from an initial condition given by the McLerran-Venugopalan model. The resulting Wilson line configurations are then used to compute the spectrum of gluons comprising the glasma initial state of a high energy heavy ion collision. The development of a geometrical scaling region makes the spectrum of produced gluons harder. Thus the ratio of the mean gluon transverse momentum to the saturation scale grows with energy. Also the total gluon multiplicity increases with energy slightly faster than the saturation scale squared. (C) 2011 Elsevier B.V. All rights reserved.
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