  In this work we study charmonium production in high multiplicity
proton-proton collisions. We investigate the role of the spatial distribution
of partons in the protons and assume that the proton has a Y shape. In this
configuration quarks are more at the surface and gluons in the inner part of
the proton. Going from peripheral to more central and then to ultra-central
proton-proton collisions, we go from quark-quark collisions to gluon-gluon
collisions. Since gluons are much more abundant, the cross sections grow. In
the case of charm production this growth is enhanced by the fact that, $\sigma(
g + g \to c + \bar{c}) >> \sigma( q + \bar{q} \to c + \bar{c})$. These effects
can explain the growth seen in the data.
