Nucleon isovector scalar charge from overlap fermions

doi:10.1103/PhysRevD.104.094503

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	Nucleon isovector scalar charge from overlap fermions
	Liu, Liuming 2; Chen, Ting 3; Draper, Terrence ; Liang, Jian 5,6; Liu, Keh-Fei ; Wang, Geng 4; Yang, Yi-Bo
刊名	PHYSICAL REVIEW D
	2021
卷号	104 期号:9 页码:94503
关键词	QUARKS
ISSN号	2470-0010
DOI	10.1103/PhysRevD.104.094503
英文摘要	We calculate the nucleon isovector scalar charge in lattice QCD using overlap fermions on five ensembles of gauge configurations generated by the RBC/UKQCD collaboration using the domain-wall quark action with 2 + 1 dynamical flavors. The five ensembles cover five pion masses, m(pi) approximate to 139, 171, 302, 337 and 371 MeV, and four lattice spacings, a approximate to 0.06, 0.08, 0.11 and 0.14 fm. Three to six valence quark masses are computed on each ensemble to investigate the pion mass dependence. The extrapolation to the physical pion mass, continuum and infinite volume limits is obtained by a global fit of all data to a formula originated from partially quenched chiral perturbation theory. The excited-states contamination is carefully analyzed with 3-5 sink-source separations and multi-state fits. Our final result, in the (MS) over bar scheme at 2 GeV, is g(S)(u-d) = 0.94(10)(stat)(8)(sys), where the first error is the statistical error and the second is the systematic error.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27641]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.UCAS, Sch Fundamental Phys & Math Sci, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 5.Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA 6.South China Normal Univ, Inst Quantum Matter, Glumgclong Prov Key Lab Nucl Sci, Guangzhou 510006, Peoples R China 7.South China Normal Univ, Southern Nucl Sci Comp Ctr, Guangdong Hong Kong Joint Lab Quantum Matter, Guangzhou 510006, Peoples R China 8.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 9.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Liuming,Chen, Ting,Draper, Terrence,et al. Nucleon isovector scalar charge from overlap fermions[J]. PHYSICAL REVIEW D,2021,104(9):94503.
APA	Liu, Liuming.,Chen, Ting.,Draper, Terrence.,Liang, Jian.,Liu, Keh-Fei.,...&Yang, Yi-Bo.(2021).Nucleon isovector scalar charge from overlap fermions.PHYSICAL REVIEW D,104(9),94503.
MLA	Liu, Liuming,et al."Nucleon isovector scalar charge from overlap fermions".PHYSICAL REVIEW D 104.9(2021):94503.