6533b82dfe1ef96bd1291463
RESEARCH PRODUCT
Gluon spectrum in the glasma from JIMWLK evolution
Tuomas LappiTuomas Lappisubject
PhysicsNuclear and High Energy PhysicsParticle physicsWilson loopta114Nuclear Theory010308 nuclear & particles physicsHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyFOS: Physical sciencesYang–Mills existence and mass gapRenormalization group01 natural sciencesGluonNuclear Theory (nucl-th)High Energy Physics - PhenomenologyDipoleHigh Energy Physics - Phenomenology (hep-ph)Quantum electrodynamics0103 physical sciencesInitial value problemBoundary value problem010306 general physicsNuclear ExperimentScalingdescription
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 inital 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-05-27 |