  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.
