Nucleon electromagnetic form factors in twisted mass lattice QCD

被引：49

作者：

Alexandrou, C. ^{[1
,2
]}

Brinet, M. ^{[3
]}

Carbonell, J. ^{[3
]}

Constantinou, M.

Harraud, P. A. ^{[3
]}

Guichon, P. ^{[4
]}

Jansen, K. ^{[5
]}

Korzec, T. ^{[1
,6
]}

Papinutto, M. ^{[3
]}

机构：

[1] Univ Cyprus, Dept Phys, CY-1678 Nicosia, Cyprus

[2] Cyprus Inst, Computat Based Sci & Technol Res Ctr, CY-2121 Nicosia, Cyprus

[3] UJF CNRS IN2P3, Lab Phys Subatom & Cosmol, F-38026 Grenoble, France

[4] CEA Saclay, IRFU Serv Phys Nucl, F-91191 Gif Sur Yvette, France

[5] DESY, NIC, D-15738 Zeuthen, Germany

[6] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.83.094502

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results on the nucleon electromagnetic form factors within lattice QCD using two flavors of degenerate twisted mass fermions. Volume effects are examined using simulations at two volumes of spatial length L = 2.1 fm and L = 2.8 fm. Cutoff effects are investigated using three different values of the lattice spacings, namely a = 0.089 fm, a = 0.070 fm and a = 0.056 fm. The nucleon magnetic moment, Dirac and Pauli radii are obtained in the continuum limit and chirally extrapolated to the physical pion mass allowing for a comparison with experiment.

引用

页数：14

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