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 [1]. 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.

Investigating the structure of gluon fluctuations in the proton with incoherent diffraction at HERA

“…These subnucleon fluctuations have also been studied in context of hydrodynamic simulations of p+Pb collisions where significantly larger values of the azimuthal flow coefficients v n were obtained compared to those of protons without fluctuating substructure [22,23]. The hotspot profile of proton has also been used to investigate the correlations and hollowness in proton-proton interactions at high energies [24][25][26][27].…”

Review of proton and nuclear shape fluctuations at high energy

“…Note that the same repulsive correlation was required to describe the Hollowness effect as discussed above. Including the full hydrodynamical evolution in the framework is underway [105].…”

Review of proton and nuclear shape fluctuations at high energy

“…Note that the same repulsive correlation was required to describe the Hollowness effect as discussed above. Including the full hydrodynamical evolution in the framework is underway [89].…”