Are the Angular Correlations in pA Collisions due to a Glasmion or Bose Condensation ?

Abstract

Experiments at the LHC have recently reported results on the angular asymmetry coefficients $v_n[m]$, for various angular moments $n$ and orders of cumulants $m$, in high multiplicity p+Pb collisions. These coefficients are large, and have both even and odd moments. We discuss here some of the implications of these results for our understanding of the initial state of the collision (Color Glass Condensate) and for the evolution in the final state (Glasma and thermalized Quark Gluon Plasma). We show the Color Glass Condensate predicts large even moments, $v_n$ with $n$ an even integer. Odd moments are generated by final state interactions or fragmentation. For a multi-particle determination of $v_2[m]$, where m is the number of particles used to determine the correlation, we argue that if these coefficients approach equality for large $m$ in high multiplicity events, this may imply the existence of either solitonic solutions or Bose condensation either for the JIMWLK action that describes the CGC, or for the Glasma that might be produced in such a collision.

v1: 12 pages, 4 figures; submitted to NPA. V2: 13 pages, 3 figures, added references, removed fig 1, clarified discussion in Sec 3

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Cited by in corpus (12)

• Multi-particle azimuthal correlations in p-Pb and Pb-Pb collisions at the CERN Large Hadron Collider
• Forward-central two-particle correlations in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Initial state angular asymmetries in high energy p+A collisions: spontaneous breaking of rotational symmetry by a color electric field and C-odd fluctuations
• Entanglement entropy and entropy production in the Color Glass Condensate framework
• A scaling relation between pA and AA collisions
• Azimuthal anisotropy of heavy-flavour decay electrons in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Azimuthal correlations of prompt D mesons with charged particles in pp and p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Kinetic evolution of the glasma and thermalization in heavy ion collisions
• Collective Expansion at the LHC: selected ALICE anisotropic flow measurements
• Long Range Azimuthal Correlations of Multiple Gluons in Gluon Saturation Limit
• Hydrodynamic Modeling for Relativistic Heavy Ion Collisions at RHIC and the LHC
• Recent Findings from Heavy-Flavor Angular Correlation Measurements in Hadronic Collisions