Lattice calculation of pion form factors with overlap fermions

doi:10.1103/PhysRevD.104.074502

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Lattice calculation of pion form factors with overlap fermions
	Wang, Gen ; Liang, Jian 2,5; Draper, Terrence ; Liu, Keh-Fei ; Yang, Yi-Bo
刊名	PHYSICAL REVIEW D
	2021
卷号	104 期号:7 页码:74502
关键词	QCD
ISSN号	2470-0010
DOI	10.1103/PhysRevD.104.074502
英文摘要	We present a precise calculation of the pion form factor using overlap fermions on seven ensembles of (2 + 1)-flavor domain-wall configurations with pion masses varying from 139 to 340 MeV. Taking advantage of the fast Fourier transform and other techniques to access many combinations of source and sink momenta, we find the pion mean square charge radius to be < r(pi)(2)> = 0.430(5)(13) fm(2), which agrees well with the experimental result, and includes the systematic uncertainties from chiral extrapolation, lattice spacing and finite-volume dependence. We also find that < r(pi)(2)> depends on both the valence and sea quark masses strongly and predicts the pion form factor up to Q(2) = 1.0 GeV2, which agrees with experiments very well.
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/311006/27629]
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.Int Ctr Theoret Phys Asia Pacific, Beijing 100019, Peoples R China 2.Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA 3.South China Normal Univ, Guangdong Hong Kong Joint Lab Quantum Matter, Southern Nucl Sci Comp Ctr, Guangzhou 510006, Peoples R China 4.Chinese Acad Sci, CAS Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China 5.South China Normal Univ, Guangdong Prov Key Lab Nucl Sci, Inst Quantum Matter, Guangzhou 510006, Peoples R China 6.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China
推荐引用方式 GB/T 7714	Wang, Gen,Liang, Jian,Draper, Terrence,et al. Lattice calculation of pion form factors with overlap fermions[J]. PHYSICAL REVIEW D,2021,104(7):74502.
APA	Wang, Gen,Liang, Jian,Draper, Terrence,Liu, Keh-Fei,&Yang, Yi-Bo.(2021).Lattice calculation of pion form factors with overlap fermions.PHYSICAL REVIEW D,104(7),74502.
MLA	Wang, Gen,et al."Lattice calculation of pion form factors with overlap fermions".PHYSICAL REVIEW D 104.7(2021):74502.