Correlated gluonic hot spots meet symmetric cumulants data at LHC energies
Abstract
We present a systematic study on the influence of spatial correlations between the proton constituents, in our case gluonic hot spots, their size and their number on the symmetric cumulant SC(2,3), at the eccentricity level, within a Monte Carlo Glauber framework [J.L. Albacete, H. Petersen, A. Soto-Ontoso, Symmetric cumulants as a probe of the proton substructure at LHC energies, Phys. Lett. B778 (2018) 128-136. arxiv:arXiv:1707.05592, doi:10.1016/j.physletb.2018.01.011]. When modeling the proton as composed by 3 gluonic hot spots, the most common assumption in the literature, we find that the inclusion of spatial correlations is indispensable to reproduce the negative sign of SC(2,3) in the highest centrality bins as dictated by data. Further, the subtle interplay between the different scales of the problem is discussed. To conclude, the possibility of feeding a 2+1D viscous hydrodynamic simulation with our entropy profiles is exposed.
- Publication:
-
Nuclear Physics A
- Pub Date:
- February 2019
- DOI:
- 10.1016/j.nuclphysa.2018.08.013
- arXiv:
- arXiv:1807.05866
- Bibcode:
- 2019NuPhA.982..463A
- Keywords:
-
- initial state;
- small systems;
- hot spots;
- correlations;
- elliptic flow;
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment;
- Nuclear Theory
- E-Print:
- 4 pages, 3 figures, talk by A.Soto-Ontoso at the Quark Matter 2018 conference