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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Bibliographic Details
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
Description
Summary: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.
ISSN:1029-8479

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