Are the angular correlations in pA collisions due to a Glasmion or Bose condensation?

作者：Dumitru, A.; Lappi, T.^*; McLerran, L.

来源：Nuclear Physics A, 2014, 922: 140-149.

DOI：10.1016/j.nuclphysa.2013.12.001

• Color glass condensate
• Elliptic flow

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.

• 出版日期2014-2
• 单位RIKEN; 华中师范大学