Double parton distributions in the pion from lattice QCD

Double parton distributions in the pion from lattice QCD

Abstract We perform a lattice study of double parton distributions in the pion, using the relationship between their Mellin moments and pion matrix elements of two local currents. A good statistical signal is obtained for almost all relevant Wick contractions. We investigate correlations in the spat...

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Main Authors: Gunnar S. Bali, Luca Castagnini, Markus Diehl, Jonathan R. Gaunt, Benjamin Gläßle, Andreas Schäfer, Christian Zimmermann
Format: Article
Language:English
Published: SpringerOpen 2021-02-01
Series:Journal of High Energy Physics
Subjects:
Lattice field theory simulation
QCD Phenomenology
Online Access:https://doi.org/10.1007/JHEP02(2021)067
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spelling doaj-72f03637e43d4c82a020037a1326e2ec2021-02-14T12:06:36ZengSpringerOpenJournal of High Energy Physics1029-84792021-02-012021215710.1007/JHEP02(2021)067Double parton distributions in the pion from lattice QCDGunnar S. Bali0Luca Castagnini1Markus Diehl2Jonathan R. Gaunt3Benjamin Gläßle4Andreas Schäfer5Christian Zimmermann6Institute for Theoretical Physics, University of RegensburgInstitute for Theoretical Physics, University of RegensburgFachbereich Physik, University of HamburgCERN Theory DivisionZentrum für Datenverarbeitung, Universität TübingenInstitute for Theoretical Physics, University of RegensburgInstitute for Theoretical Physics, University of RegensburgAbstract We perform a lattice study of double parton distributions in the pion, using the relationship between their Mellin moments and pion matrix elements of two local currents. A good statistical signal is obtained for almost all relevant Wick contractions. We investigate correlations in the spatial distribution of two partons in the pion, as well as correlations involving the parton polarisation. The patterns we observe depend significantly on the quark mass. We investigate the assumption that double parton distributions approximately factorise into a convolution of single parton distributions.https://doi.org/10.1007/JHEP02(2021)067Lattice field theory simulationQCD Phenomenology
collection DOAJ
language English
format Article
sources DOAJ
author Gunnar S. Bali
Luca Castagnini
Markus Diehl
Jonathan R. Gaunt
Benjamin Gläßle
Andreas Schäfer
Christian Zimmermann
spellingShingle Gunnar S. Bali
Luca Castagnini
Markus Diehl
Jonathan R. Gaunt
Benjamin Gläßle
Andreas Schäfer
Christian Zimmermann
Double parton distributions in the pion from lattice QCD
Journal of High Energy Physics
Lattice field theory simulation
QCD Phenomenology
author_facet Gunnar S. Bali
Luca Castagnini
Markus Diehl
Jonathan R. Gaunt
Benjamin Gläßle
Andreas Schäfer
Christian Zimmermann
author_sort Gunnar S. Bali
title Double parton distributions in the pion from lattice QCD
title_short Double parton distributions in the pion from lattice QCD
title_full Double parton distributions in the pion from lattice QCD
title_fullStr Double parton distributions in the pion from lattice QCD
title_full_unstemmed Double parton distributions in the pion from lattice QCD
title_sort double parton distributions in the pion from lattice qcd
publisher SpringerOpen
series Journal of High Energy Physics
issn 1029-8479
publishDate 2021-02-01
description Abstract We perform a lattice study of double parton distributions in the pion, using the relationship between their Mellin moments and pion matrix elements of two local currents. A good statistical signal is obtained for almost all relevant Wick contractions. We investigate correlations in the spatial distribution of two partons in the pion, as well as correlations involving the parton polarisation. The patterns we observe depend significantly on the quark mass. We investigate the assumption that double parton distributions approximately factorise into a convolution of single parton distributions.
topic Lattice field theory simulation
QCD Phenomenology
url https://doi.org/10.1007/JHEP02(2021)067
work_keys_str_mv AT gunnarsbali doublepartondistributionsinthepionfromlatticeqcd
AT lucacastagnini doublepartondistributionsinthepionfromlatticeqcd
AT markusdiehl doublepartondistributionsinthepionfromlatticeqcd
AT jonathanrgaunt doublepartondistributionsinthepionfromlatticeqcd
AT benjaminglaßle doublepartondistributionsinthepionfromlatticeqcd
AT andreasschafer doublepartondistributionsinthepionfromlatticeqcd
AT christianzimmermann doublepartondistributionsinthepionfromlatticeqcd
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