ρ meson form factors in a confining Nambu-Jona-Lasinio model

被引：18
|
作者：
Carrillo-Serrano, Manuel E. [1 ,2 ]
Bentz, Wolfgang [3 ]
Cloet, Ian C. [4 ]
Thomas, Anthony W. [1 ,2 ]
机构：
[1] Univ Adelaide, CSSM, Adelaide, SA 5005, Australia
[2] Univ Adelaide, ARC Ctr Excellence Particle Phys Tera Scale, Dept Phys, Adelaide, SA 5005, Australia
[3] Tokai Univ, Sch Sci, Dept Phys, Hiratsuka, Kanagawa 2591292, Japan
[4] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA
来源：
PHYSICAL REVIEW C | 2015年 / 92卷 / 01期
基金：
澳大利亚研究理事会;
关键词：
QUARK DISTRIBUTIONS; DYNAMICAL MODEL; LIGHT; COVARIANT; ANALOGY;
D O I：
10.1103/PhysRevC.92.015212
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Elastic electromagnetic form factors for the rho(+) meson are calculated in a Nambu-Jona-Lasinio model which incorporates quark confinement through the use of the proper-time regularization scheme. A comparison is made with recent lattice QCD results and previous quark model calculations for static quantities and the Sachs form factors. The results are qualitatively in good agreement with the lattice QCD calculations, with the exception of the quadrupole moment and corresponding form factor, which may be related to a lack of spherical symmetry on the lattice.
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页数：8
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