Abstract
We investigate the effect of nontrivial spatial correlations between proton constituents, considered in this work to be gluonic hot spots, on the initial conditions of proton-proton collisions from ISR to Large Hadron Collider energies, i.e., , 7000, and 13 000 GeV. The inclusion of these correlations is motivated by their fundamental role in the description of a recently observed new feature of scattering at TeV, the hollowness effect. Our analysis relies on a Monte Carlo Glauber approach including fluctuations in the hot spot positions and their entropy deposition in the transverse plane. We explore both the energy dependence and the effect of spatial correlations on the number of wounded hot spots, their spatial distribution, and the eccentricities, , of the initial state geometry of the collision. In minimum bias collisions we find that the inclusion of short-range repulsive correlations between the hot spots reduces the value of the eccentricity () and the triangularity (). In turn, upon considering only the events with the highest entropy deposition, i.e., the ultracentral ones, the probability of having larger increases significantly in the correlated scenario. Finally, the eccentricities show a quite mild energy dependence.
4 More- Received 22 December 2016
- Revised 19 May 2017
DOI:https://doi.org/10.1103/PhysRevC.95.064909
©2017 American Physical Society