Speaker
Matteo Rinaldi
(PG)
Description
We present a calculation of the effective cross section σ_eff , an important ingredient in the theoretical description
of double parton scattering in proton-proton collisions. The theoretical approach makes use of a Light-Front quark
model as framework to calculate the double parton distribution functions at low-resolution scale. QCD evolution is
implemented to reach the experimental resolution scale. The obtained σ_eff , when averaged over the longitudinal
momentum fractions of the interacting partons, x_i in the valence region, is consistent with the present experimental
scenario. However the complete result shows a strong dependence of σ_eff on x_i, a feature not easily seen in the
available data, probably because of their low accuracy. Measurements of σ_eff in restricted x_i regions are addressed to
obtain a first indication of double parton correlations, a novel and interesting aspect of the three dimensional structure
of the nucleon.
Author
Matteo Rinaldi
(PG)
Co-authors
Marco Claudio Traini
(TN)
Sergio Scopetta
(PG)
Prof.
Vicente Vento
(Departament de Fisica Teorica, Universitat de València e and Institut de Fisica Corpuscular, Consejo Superior de Investigaciones Cientificas, 46100 Burjassot (València), Spain)
