Novel Soft-Pion Theorem for Long-Range Nuclear Parity Violation

doi:10.1103/PhysRevLett.120.181801

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	Novel Soft-Pion Theorem for Long-Range Nuclear Parity Violation
	Feng, X 2,3,4; Guo, FK ; Seng, CY
刊名	PHYSICAL REVIEW LETTERS
	2018
卷号	120 期号:18 页码:181801
关键词	CHIRAL PERTURBATION-THEORY PROTON-PROTON-SCATTERING TIME-REVERSAL VIOLATION EFFECTIVE-FIELD THEORY P-ALPHA-SCATTERING CIRCULAR-POLARIZATION COUPLING-CONSTANT NEUTRON-CAPTURE ANAPOLE MOMENT NONCONSERVATION
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.120.181801
英文摘要	The parity-odd effect in the standard model weak neutral current reveals itself in the long-range parity-violating nuclear potential generated by the pion exchanges in the Delta I = 1 channel with the parity-odd pion-nucleon coupling constant h(pi)(1). Despite decades of experimental and theoretical efforts, the size of this coupling constant is still not well understood. In this Letter, we derive a soft-pion theorem relating hR and the neutron-proton mass splitting induced by an artificial parity-even counterpart of the Delta I = 1 weak Lagrangian and demonstrate that the theorem still holds exact at the next-to-leading order in the chiral perturbation theory. A considerable amount of simplification is expected in the study of h(pi)(1) by using either lattice or other QCD models following its reduction from a parity-odd proton-neutron-pion matrix element to a simpler spectroscopic quantity. The theorem paves the way to much more precise calculations of h(pi)(1), and thus a quantitative test of the strangeness-conserving neutral current interaction of the standard model is foreseen.
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/311006/22908]
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.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 2.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 3.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 4.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China 5.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 6.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 7.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Feng, X,Guo, FK,Seng, CY. Novel Soft-Pion Theorem for Long-Range Nuclear Parity Violation[J]. PHYSICAL REVIEW LETTERS,2018,120(18):181801.
APA	Feng, X,Guo, FK,&Seng, CY.(2018).Novel Soft-Pion Theorem for Long-Range Nuclear Parity Violation.PHYSICAL REVIEW LETTERS,120(18),181801.
MLA	Feng, X,et al."Novel Soft-Pion Theorem for Long-Range Nuclear Parity Violation".PHYSICAL REVIEW LETTERS 120.18(2018):181801.