Anisotropy of the semi-classical gluon field of a large nucleus at high energy

Abstract

The McLerran-Venugopalan model describes a highly boosted hadron/nucleus as a sheet of random color charges which source soft classical Weizsäcker-Williams gluon fields. We show that due to fluctuations, individual configurations are azimuthally anisotropic. We present initial evidence that impact parameter dependent small-x JIMWLK resummation preserves such anisotropies over several units of rapidity. Finally, we compute the first four azimuthal Fourier amplitudes of the S-matrix of a fundamental dipole in such background fields.

8 pages, 6 figures; results on JIMWLK evolution were added; version accepted to Phys. Rev. D

References in corpus (11)

• Observation of long-range near-side angular correlations in proton-lead collisions at the LHC
• Relations between generalized and transverse momentum dependent parton distributions
• Multi-particle azimuthal correlations in p-Pb and Pb-Pb collisions at the CERN Large Hadron Collider
• Wilson line correlator in the MV model: relating the glasma to deep inelastic scattering
• Angular Correlations in Gluon Production at High Energy
• 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
• Two-gluon correlations and initial conditions for small-x evolution
• Non-Abelian Bremsstrahlung and Azimuthal Asymmetries in High Energy p+A Reactions

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