On sum rules for double and triple parton distribution functions and Pythia's model of multiple parton interactions

by Oleh Fedkevych (Istituto Nazionale di Fisica Nucleare)

Thursday 20 Oct 2022, 11:00 → 12:00 Europe/Rome

602 e online (Dip.to di Fisica Univ. di Genova)

Multi-parton distributions in a proton, the nonperturbative quantities needed to make predictions for multiple scattering rates, are poorly constrained from theory and data and must be modelled. All Monte Carlo event generators that simulate multiple parton interactions (e.g. Pythia) contain such a model of multi-parton PDFs. One important theoretical constraint for the case of double parton distributions is provided by the so-called number and momentum sum rules. In this talk I will give a brief overview of existing models of multi-parton PDFs and discuss to what extent the double parton distribution functions used in the Pythia event generator obey these sum rules. Additionally I will also  consider the number and momentum sum rules for the triple parton distribution functions and discuss how one can use the Pythia code to construct triple parton distribution functions which approximately satisfy these sum rules.

 

Per connettersi a zoom

Topic: Theory and Pheno seminars

https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271

Registrazione seminario

UNIGE_2022_OFedkevych.pdf