Two-current correlations in the pion on the lattice

Two-current correlations in the pion on the lattice

Abstract We perform a systematic study of the correlation functions of two quark currents in a pion using lattice QCD. We obtain good signals for all but one of the relevant Wick contractions of quark fields. We investigate the quark mass dependence of our results and test the importance of correlat...

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Main Authors: Gunnar S. Bali, Peter C. Bruns, Luca Castagnini, Markus Diehl, Jonathan R. Gaunt, Benjamin Gläßle, Andreas Schäfer, André Sternbeck, Christian Zimmermann
Format: Article
Language:English
Published: SpringerOpen 2018-12-01
Series:Journal of High Energy Physics
Subjects:
Lattice QCD
Chiral Lagrangians
Online Access:http://link.springer.com/article/10.1007/JHEP12(2018)061
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spelling doaj-aa10e9f175664520b14086637699d4be2020-11-25T00:29:23ZengSpringerOpenJournal of High Energy Physics1029-84792018-12-0120181214810.1007/JHEP12(2018)061Two-current correlations in the pion on the latticeGunnar S. Bali0Peter C. Bruns1Luca Castagnini2Markus Diehl3Jonathan R. Gaunt4Benjamin Gläßle5Andreas Schäfer6André Sternbeck7Christian Zimmermann8Institute for Theoretical Physics, University of RegensburgNuclear Physics Institute, Academy of Sciences of the Czech RepublicInstitute for Theoretical Physics, University of RegensburgFachbereich Physik, University of HamburgTheoretical Physics Department, CERNZentrum für Datenverarbeitung, Universität TübingenInstitute for Theoretical Physics, University of RegensburgTheoretisch-Physikalisches Institut, Friedrich-Schiller-Universität JenaInstitute for Theoretical Physics, University of RegensburgAbstract We perform a systematic study of the correlation functions of two quark currents in a pion using lattice QCD. We obtain good signals for all but one of the relevant Wick contractions of quark fields. We investigate the quark mass dependence of our results and test the importance of correlations between the quark and the antiquark in the pion. Our lattice data are compared with predictions from chiral perturbation theory.http://link.springer.com/article/10.1007/JHEP12(2018)061Lattice QCDChiral Lagrangians
collection DOAJ
language English
format Article
sources DOAJ
author Gunnar S. Bali
Peter C. Bruns
Luca Castagnini
Markus Diehl
Jonathan R. Gaunt
Benjamin Gläßle
Andreas Schäfer
André Sternbeck
Christian Zimmermann
spellingShingle Gunnar S. Bali
Peter C. Bruns
Luca Castagnini
Markus Diehl
Jonathan R. Gaunt
Benjamin Gläßle
Andreas Schäfer
André Sternbeck
Christian Zimmermann
Two-current correlations in the pion on the lattice
Journal of High Energy Physics
Lattice QCD
Chiral Lagrangians
author_facet Gunnar S. Bali
Peter C. Bruns
Luca Castagnini
Markus Diehl
Jonathan R. Gaunt
Benjamin Gläßle
Andreas Schäfer
André Sternbeck
Christian Zimmermann
author_sort Gunnar S. Bali
title Two-current correlations in the pion on the lattice
title_short Two-current correlations in the pion on the lattice
title_full Two-current correlations in the pion on the lattice
title_fullStr Two-current correlations in the pion on the lattice
title_full_unstemmed Two-current correlations in the pion on the lattice
title_sort two-current correlations in the pion on the lattice
publisher SpringerOpen
series Journal of High Energy Physics
issn 1029-8479
publishDate 2018-12-01
description Abstract We perform a systematic study of the correlation functions of two quark currents in a pion using lattice QCD. We obtain good signals for all but one of the relevant Wick contractions of quark fields. We investigate the quark mass dependence of our results and test the importance of correlations between the quark and the antiquark in the pion. Our lattice data are compared with predictions from chiral perturbation theory.
topic Lattice QCD
Chiral Lagrangians
url http://link.springer.com/article/10.1007/JHEP12(2018)061
work_keys_str_mv AT gunnarsbali twocurrentcorrelationsinthepiononthelattice
AT petercbruns twocurrentcorrelationsinthepiononthelattice
AT lucacastagnini twocurrentcorrelationsinthepiononthelattice
AT markusdiehl twocurrentcorrelationsinthepiononthelattice
AT jonathanrgaunt twocurrentcorrelationsinthepiononthelattice
AT benjaminglaßle twocurrentcorrelationsinthepiononthelattice
AT andreasschafer twocurrentcorrelationsinthepiononthelattice
AT andresternbeck twocurrentcorrelationsinthepiononthelattice
AT christianzimmermann twocurrentcorrelationsinthepiononthelattice
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