Relativistic effects in model calculations of double parton distribution functions

[en] In this paper we consider double-parton distribution functions (dPDFs), which are the main nonperturbative ingredients appearing in the double-parton scattering cross section formula in hadronic collisions. By using recent calculation of dPDFs by means of constituent quark models within the so-called light-front approach, we investigate the role of relativistic effects on dPDFs. We find, in particular, that the so-called Melosh operators, which allow us to properly convert the LF spin into the canonical one and incorporate a proper treatment of boosts, produce sizeable effects on dPDFs. We discuss specific partonic correlations induced by these operators in the transverse plane which are relevant to the proton structure, and we study under which conditions these results are stable against variations in the choice of the proton wave function. © 2017 American Physical Society.

Disciplines :

Physics

Author, co-author :

Rinaldi, Matteo; Instituto de Fisica Corpuscular (CSIC-Universitat de Valencia), Parc Cientific UV, c/Catedratico Jose Beltran 2, Paterna, Valencia, E-46980, Spain

Ceccopieri, Federico ; Université de Liège - ULg

Language :

English

Title :

Relativistic effects in model calculations of double parton distribution functions

Publication date :

2017

Journal title :

Physical Review. D

ISSN :

2470-0010

eISSN :

2470-0029

Publisher :

American Physical Society, College Park, United States - Maryland

Volume :

Issue :

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 13 April 2020

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