Diquark mass differences from unquenched lattice QCD

被引：25

作者：

Bi, Yujiang ^{[1
]}

Cai, Hao ^{[1
]}

Chen, Ying ^{[2
,3
]}

Gong, Ming ^{[2
,3
]}

Liu, Zhaofeng ^{[2
,3
]}

Qiao, Hao-Xue ^{[1
]}

Yang, Yi-Bo ^{[4
]}

机构：

[1] Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Peoples R China

[2] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Ctr Theoret Phys, Sci Facil, Beijing 100049, Peoples R China

[4] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA

来源：

CHINESE PHYSICS C | 2016年 / 40卷 / 07期

基金：

美国国家科学基金会;

关键词：

lattice QCD; diquarks; overlap fermions; Landau gauge;

D O I：

10.1088/1674-1137/40/7/073106

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：

We calculate diquark correlation functions in the Landau gauge on the lattice using overlap valence quarks and 2+1-flavor domain wall fermion configurations. Quark masses are extracted from the scalar part of quark propagators in the Landau gauge. The scalar diquark quark mass difference and axial vector scalar diquark mass difference are obtained for diquarks composed of two light quarks and of a strange and a light quark. The light sea quark mass dependence of the results is examined. Two lattice spacings are used to check the discretization effects. The coarse and fine lattices are of sizes 24(3) x 64 and 32(3) x 64 with inverse spacings 1/a = 1.75(4) GeV and 2.33(5) GeV, respectively.

引用

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