Journal
PHYSICS LETTERS B
Volume 706, Issue 2-3, Pages 219-224Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2011.11.002
Keywords
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Funding
- Academy of Finland [126604, 141555]
- US Department of Energy [DE-AC02-98CH10886]
- DOE Office of Nuclear Physics [DE-FG02-09ER41620]
- City University of New York [63382-0041, 63404-0041]
- Brookhaven National Laboratory [LDRD 10-043]
- Academy of Finland (AKA) [141555, 141555] Funding Source: Academy of Finland (AKA)
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Many-body QCD in leading high energy Regge asymptotics is described by the Balitsky-JIMWLK hierarchy of renormalization group equations for the x evolution of multi-point Wilson line correlators. These correlators are universal and ubiquitous in final states in deeply inelastic scattering and hadronic collisions. For instance, recently measured di-hadron correlations at forward rapidity in deuteron-gold collisions at the Relativistic Heavy Ion Collider (RHIC) are sensitive to four and six point correlators of Wilson lines in the small x color fields of the dense nuclear target. We evaluate these correlators numerically by solving the functional Langevin equation that describes the Balitsky-JIMWLK hierarchy. We compare the results to mean-field Gaussian and large N(c) approximations used in previous phenomenological studies. We comment on the implications of our results for quantitative studies of multi-gluon final states in high energy QCD. (C) 2011 Elsevier B.V. All rights reserved.
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