Azimuthal harmonics of color fields in a high energy nucleus

Abstract

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.

6 pages, 3 figures, ReVTEX V2: added references and labels on figures

References in corpus (18)

• The Color Glass Condensate
• Observation of long-range near-side angular correlations in proton-lead collisions at the LHC
• The ridge in proton-proton collisions at the LHC
• Multi-particle azimuthal correlations in p-Pb and Pb-Pb collisions at the CERN Large Hadron Collider
• Correlations from hydrodynamic flow in p-Pb collisions
• Explanation of systematics of CMS p+Pb high multiplicity di-hadron data at ${\sqrt{s}}_{\mathrm{NN}}=5.02$ TeV
• Eccentric protons? Sensitivity of flow to system size and shape in p+p, p+Pb and Pb+Pb collisions
• Wilson line correlator in the MV model: relating the glasma to deep inelastic scattering
• Angular Correlations in Gluon Production at High Energy
• Particle Production at High Energy and Large Transverse Momentum - "The Hybrid Formalism" Revisited
• High energy factorization in nucleus-nucleus collisions II - Multigluon correlations
• Azimuthal asymmetries and the emergence of "collectivity" from multi-particle correlations in high-energy pA collisions
• The shape of the proton at high energies
• On the running coupling in the JIMWLK equation
• Initial state angular asymmetries in high energy p+A collisions: spontaneous breaking of rotational symmetry by a color electric field and C-odd fluctuations
• Three-particle correlation from glasma flux tubes
• pT-Broadening and production processes versus dipole/quadrupole amplitudes at next-to-leading order
• High order cumulants of the azimuthal anisotropy in the dilute-dense limit: Connected graphs

Cited by in corpus (10)

• Mass ordering of spectra from fragmentation of saturated gluon states in high multiplicity proton-proton collisions
• The smallest fluid on earth
• Importance of initial and final state effects for azimuthal correlations in p+Pb collisions
• Parton model description of multiparticle azimuthal correlations in $pA$ collisions
• On the elliptic flow of heavy quarkonia in $pA$ collisions
• Multi-particle production in proton-nucleus collisions in the Color Glass Condensate
• Multiparticle azimuthal angular correlations in $pA$ collisions
• Initial state qqg correlations as a background for the Chiral Magnetic Effect in collision of small systems
• What does the matter created in high multiplicity proton-nucleus collisions teach us about the 3-D structure of the proton?
• Mapping the internal structure of hadrons through color and spin effects