Forward dihadron correlations in deuteron-gold collisions with a Gaussian approximation of JIMWLK
arXiv:1209.2853 · doi:10.1016/j.nuclphysa.2013.03.017
Abstract
We compute dihadron correlations in forward deuteron-gold or proton-gold collisions. The running coupling BK equation is used to calculate the energy dependence of the dipole cross sections and extended to higher point Wilson line correlators using a factorized Gaussian approximation. Unlike some earlier works we include both the "inelastic" and "elastic" contributions to the dihadron cross section. We show that the double parton scattering contribution is included in our calculation and obtain both an away side peak that roughly agrees with experimental observations and an estimate for the azimuthal angle-independent pedestal. We find that nonlinear effects for momenta close to the saturation scale are clearly visible in the away side peak structure.
15 pages, 12 figures, RevTeX. v2: Published in Nucl. Phys. A
References in corpus (16)
- New parton distributions for collider physics
- The Color Glass Condensate
- Global analysis of fragmentation functions for pions and kaons and their uncertainties
- Universality of Unintegrated Gluon Distributions at small x
- Quark contribution to the small- evolution of color dipole
- Forward inclusive dijet production and azimuthal correlations in pA collisions
- Solving The High Energy Evolution Equation Including Running Coupling Corrections
- Azimuthal correlations of forward di-hadrons in d+Au collisions at RHIC in the Color Glass Condensate
- Single Inclusive Hadron Production at RHIC and the LHC from the Color Glass Condensate
- Forward Neutral Pion Production in p+p and d+Au Collisions at sqrt(s_NN)=200 GeV
- The four jet production at LHC and Tevatron in QCD
- Angular Correlations in Gluon Production at High Energy
- Two-particle correlations in high energy collisions and the gluon four-point function
- Small x physics and RHIC data
- Forward dijets in high-energy collisions: evolution of QCD n-point functions beyond the dipole approximation
- Azimuthal Angle Correlations for Rapidity Separated Hadron Pairs in d+Au Collisions at sqrt(s_NN) = 200 GeV