Systematics of azimuthal anisotropy harmonics in proton–nucleus collisions at the LHC from the Color Glass Condensate

• DOI: 10.1016/j.physletb.2018.09.064
• Publication Date: 2018-11-07T12:51:19Z
• Authors: Mark Mace; Vladimir V. Skokov; Prithwish Tribedy; Raju Venugopalan
• Keywords: Color Glass Condensate; Complement

Simple power counting arguments in the dilute-dense framework of Color Glass Condensate (CGC) Effective Field Theory predict that even and odd azimuthal anisotropy harmonics two-particle correlations proton-nucleus collisions at LHC will respectively satisfy v^2_{2n} ~ N_{ch}^0 v^2_{2n+1} N_{ch}, where N_{ch} denotes number charged particles. We show these expectations are borne out qualitatively, quantitatively, within systematic uncertainties, for v_2 v_4 comparisons with data from ATLAS collaboration. also observe v_3 harmonic excellent agreement our qualitative expectation; quantitative numerically challenging present. The lessons this study fully complement those gained by recent comparison CGC [arXiv:1805.09342] to PHENIX collaboration on small system RHIC.