Two-current correlations in the pion on the lattice

被引：18

作者：

Bali, Gunnar S. ^{[1
,2
]}

Bruns, Peter C. ^{[3
]}

Castagnini, Luca ^{[1
]}

Diehl, Markus ^{[4
,5
]}

Gaunt, Jonathan R. ^{[6
]}

Glaessle, Benjamin ^{[7
]}

Schaefer, Andreas ^{[1
]}

Sternbeck, Andre ^{[8
]}

Zimmermann, Christian ^{[1
]}

机构：

[1] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

[2] Tata Inst Fundamental Res, Dept Theoret Phys, Homi Bhabha Rd, Bombay 400005, Maharashtra, India

[3] Acad Sci Czech Republ, Nucl Phys Inst, Hlavni 130, Rez 25069, Czech Republic

[4] Univ Hamburg, Fachbereich Phys, Jungiusstr 9-11, D-20355 Hamburg, Germany

[5] Deutsch Elektronen Synchroton DESY, Notkestr 85, D-22607 Hamburg, Germany

[6] CERN, Theoret Phys Dept, CH-1211 Geneva 23, Switzerland

[7] Univ Tubingen, Zentrum Datenverarbeitung, Wachterstr 76, D-72074 Tubingen, Germany

[8] Friedrich Schiller Univ Jena, Theoret Phys Inst, Max Wien Pl 1, D-07743 Jena, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2018年 / 12期

关键词：

Lattice QCD; Chiral Lagrangians; CHARGE-DISTRIBUTIONS; QCD; RENORMALIZATION; IMPROVEMENT;

D O I：

10.1007/JHEP12(2018)061

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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.

引用

页数：48

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