6533b824fe1ef96bd1280ab3

RESEARCH PRODUCT

Double parton scattering: A study of the effective cross section within a Light-Front quark model

Marco TrainiMarco TrainiSergio ScopettaSergio ScopettaMatteo RinaldiMatteo RinaldiVicente Vento

subject

Particle physicsNuclear and High Energy PhysicsFOS: Physical sciencesParton01 natural sciencesNuclear physicsHigh Energy Physics - Phenomenology (hep-ph)Multi parton interactions; Parton correlations; Partons; Nuclear and High Energy Physics0103 physical sciencesNuclear Experiment010306 general physicsPartonsQuantum chromodynamicsPhysicsPartons; Multi parton interactions; Parton correlations010308 nuclear & particles physicsScatteringHigh Energy Physics::PhenomenologyQuark modellcsh:QC1-999High Energy Physics - PhenomenologyDistribution functionMulti parton interactionsParton correlationsNucleonlcsh:Physics

description

We present a calculation of the effective cross section $\sigma_{eff}$, an important ingredient in the description of double parton scattering in proton-proton collisions. Our 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 scale. The obtained $\sigma_{eff}$, when averaged over the longitudinal momentum fractions of the interacting partons, $x_i$, is consistent with the present experimental scenario. However the result of the complete calculation shows a dependence of $\sigma_{eff}$ on $x_i$, a feature not easily seen in the available data, probably because of their low accuracy. Measurements of $\sigma_{eff}$ in restricted $x_i$ regions are addressed to obtain indications on double parton correlations, a novel and interesting aspect of the three dimensional structure of the nucleon.

10.1016/j.physletb.2015.11.031http://hdl.handle.net/11391/1403642