Two-current correlations in the pion on the lattice

Journal of High Energy Physics

Markus Diehl¹  Andreas Schäfer²  Gunnar S. Bali²  Christian Zimmermann²  Luca Castagnini²  Peter C. Bruns³  Jonathan R. Gaunt⁴  André Sternbeck⁵  Benjamin Gläßle⁶ 

[1] Fachbereich Physik, University of Hamburg;Institute for Theoretical Physics, University of Regensburg;Nuclear Physics Institute, Academy of Sciences of the Czech Republic;Theoretical Physics Department, CERN;Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena;Zentrum für Datenverarbeitung, Universität Tübingen;

关键词: Lattice QCD;    Chiral Lagrangians;   

DOI  :  10.1007/JHEP12(2018)061

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown