6533b821fe1ef96bd127adc9
RESEARCH PRODUCT
Azimuthal harmonics of color fields in a high energy nucleus
Tuomas LappiTuomas Lappisubject
Nuclear and High Energy PhysicsWilson loopNuclear TheoryGLASMA FLUX TUBESFOS: Physical sciencesPosition and momentum space114 Physical sciences01 natural sciencesColor-glass condensateNuclear Theory (nucl-th)GLUON DISTRIBUTION-FUNCTIONSHigh Energy Physics - Phenomenology (hep-ph)CONDENSATE0103 physical sciencesSIDEproton-nucleus collisionsMultiplicity (chemistry)LONG-RANGE010306 general physicsAnisotropyWave functionNuclear ExperimentPhysicsta114010308 nuclear & particles physicsScatteringPB COLLISIONSTRANSVERSE-MOMENTUMMULTIPLICITYPPB COLLISIONSANGULAR-CORRELATIONSlcsh:QC1-999High Energy Physics - PhenomenologyQuantum electrodynamicsmultiparticle azimuthal correlationsColor chargelcsh:Physicsdescription
Recent experimental results have revealed a surprisingly rich structure of multiparticle azimuthal correlations in high energy proton-nucleus collisions. Final state collective effects can be responsible for many of the observed effects, but it has recently been argued that a part of these correlations are present already in the wavefunctions of the colliding particles. We evaluate the momentum space 2-particle cumulant azimuthal anisotropy coefficients v_n{2}, n=2,3,4 from fundamental representation Wilson line distributions describing the high energy nucleus. These would correspond to the flow coefficients in very forward proton nucleus scattering. We find significant differences beteen Wilson lines from the MV model and from JIMWLK evolution. The magnitude and transverse momentum dependence of the v_n{2} values suggest that the fluctuations present in the initial fields are a significant contribution to the observed anisotropies.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-05-01 | Physics Letters B |