Renormalization group evolution of multi-gluon correlators in high energy QCD

Journal Article · Sun Nov 06 00:00:00 EDT 2011 · Physics Letters, (Section) B

DOI:https://doi.org/10.1016/j.physletb.2011.11.002· OSTI ID:1043352

Dumitru, A; Venugopalan, R; Jalilian-Marian, J; Lappi, T; Schenke, B

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 Nc 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.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center
• Sponsoring Organization: RIKEN
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1043352
• Report Number(s): BNL-96617-2011-JA; PYLBAJ; TRN: US1203110
• Journal Information: Physics Letters, (Section) B, Vol. 706, Issue 2-3; ISSN 0370-2693
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
APPROXIMATIONS
COLOR
FUNCTIONALS
HEAVY IONS
INELASTIC SCATTERING
LANGEVIN EQUATION
PARTICLE RAPIDITY
QUANTUM CHROMODYNAMICS
RENORMALIZATION
ION COLLISIONS
renormalization
evolution
nulti-gluon
correlators
QCD
riken bnl research center