Demonstration of the hadron mass origin from the QCD trace anomaly

doi:10.1103/PhysRevD.104.074507

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

	Demonstration of the hadron mass origin from the QCD trace anomaly
	He, Fangcheng ; Sun, Peng 1; Yang, Yi-Bo
刊名	PHYSICAL REVIEW D
	2021
卷号	104 期号:7 页码:74507
关键词	ENERGY-MOMENTUM TENSOR LATTICE RENORMALIZATION QUARKONIUM QUARKS
ISSN号	2470-0010
DOI	10.1103/PhysRevD.104.074507
英文摘要	Quantum chromodynamics (QCD) claims that the major source of the nucleon invariant mass is not the Higgs mechanism but the trace anomaly in the QCD energy-momentum tensor. Although experimental and theoretical results support such a conclusion, a direct demonstration is still absent. We present the first lattice QCD calculation of the quark and gluon trace anomaly contributions to the hadron masses, using the overlap fermion on the 2 + 1-flavor dynamical domain wall quark ensemble at m(pi) = 340 MeV and lattice spacing a = 0.1105 fm. The result shows that the gluon trace anomaly contributes to most of the nucleon mass, the contribution in the pion state is smaller than that in others nearly by a factor of similar to 10, and the gluon trace anomaly density in the center of the pion is negative. The gluon trace anomaly coefficient beta/g(3) = -0.056(6) we obtained is consistent with its regularization-independent leading-order value (-11 + 2N(f)/3)/(4 pi)(2) perfectly.
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/311006/27606]
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.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Natijing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China 3.UCAS, Sch Fundamental Phys & Math Sci, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China 4.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China 5.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	He, Fangcheng,Sun, Peng,Yang, Yi-Bo. Demonstration of the hadron mass origin from the QCD trace anomaly[J]. PHYSICAL REVIEW D,2021,104(7):74507.
APA	He, Fangcheng,Sun, Peng,&Yang, Yi-Bo.(2021).Demonstration of the hadron mass origin from the QCD trace anomaly.PHYSICAL REVIEW D,104(7),74507.
MLA	He, Fangcheng,et al."Demonstration of the hadron mass origin from the QCD trace anomaly".PHYSICAL REVIEW D 104.7(2021):74507.