cos(4.PHI.) azimuthal anisotropy in small-x DIS dijet production beyond the leading power TMD limit

@article{Dumitru2016cos4PHIAA,
  title={cos(4.PHI.) azimuthal anisotropy in small-x DIS dijet production beyond the leading power TMD limit},
  author={Adrian Dumitru and Vladimir V. Skokov},
  journal={Physical Review D},
  year={2016},
  volume={94},
  pages={014030}
}
We determine the first correction to the quadrupole operator in high-energy QCD beyond the transverse momentum dependent (TMD) limit of Weizs\"acker-Williams and linearly polarized gluon distributions. These functions give rise to isotropic, respectively, $\ensuremath{\sim}\mathrm{cos}2\ensuremath{\phi}$ angular distributions in deep inelastic scattering (DIS) dijet production. On the other hand, the correction produces a $\ensuremath{\sim}\mathrm{cos}4\ensuremath{\phi}$ angular dependence… Expand

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