Effective field theory in the study of long range nuclear parity violation on lattice

doi:10.1140/epjc/s10052-018-6529-y

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	Effective field theory in the study of long range nuclear parity violation on lattice
	Guo, FK ; Seng, CY
刊名	EUROPEAN PHYSICAL JOURNAL C
	2019
卷号	79 期号:1 页码:22
关键词	CHIRAL PERTURBATION-THEORY COUPLING-CONSTANT NEUTRON-CAPTURE QUENCHED QCD PROPAGATORS OBSERVABLES SCATTERING REDUCTION FERMIONS MASS
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-018-6529-y
英文摘要	A non-zero signal Anp=(-3.0 +/- 1.4 +/- 0.2)x10-8 of the gamma-ray asymmetry in the neutron-proton capture was recently reported by the NPDGamma Collaboration which provides the first determination of the I=1 parity-odd pion-nucleon coupling constant h1=(2.6 +/- 1.2 +/- 0.2)x10-7. The ability to reproduce this value from first principles serves as a direct test of our current understanding of the interplay between the strong and weak interaction at low energy. To motivate new lattice studies of h1, we review the current status of the theoretical understanding of this coupling, which includes our recent work that relates it to a nucleon mass-splitting by a soft-pion theorem. We further investigate the possibility of calculating the mass-splitting on the lattice by providing effective field theory parameterizations of all the involved quark contraction diagrams. We show that the lattice calculations of the easier connected diagrams will provide information of the chiral logarithms in the much harder quark loop diagrams and thus help in the chiral extrapolation of the latter.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23508]
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.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Shanghai Jiao Tong Univ, Sch Phys & Astron, MOE Key Lab Particle Phys Astrophys & Cosmol, INPAC,Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China
推荐引用方式 GB/T 7714	Guo, FK,Seng, CY. Effective field theory in the study of long range nuclear parity violation on lattice[J]. EUROPEAN PHYSICAL JOURNAL C,2019,79(1):22.
APA	Guo, FK,&Seng, CY.(2019).Effective field theory in the study of long range nuclear parity violation on lattice.EUROPEAN PHYSICAL JOURNAL C,79(1),22.
MLA	Guo, FK,et al."Effective field theory in the study of long range nuclear parity violation on lattice".EUROPEAN PHYSICAL JOURNAL C 79.1(2019):22.