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Feng, X1,2,3; Guo, FK; Seng, CY
Novel Soft-Pion Theorem for Long-Range Nuclear Parity Violation
Source PublicationPHYSICAL REVIEW LETTERS
Language英语
KeywordCHIRAL PERTURBATION-THEORY PROTON-PROTON-SCATTERING TIME-REVERSAL VIOLATION EFFECTIVE-FIELD THEORY P-ALPHA-SCATTERING CIRCULAR-POLARIZATION COUPLING-CONSTANT NEUTRON-CAPTURE ANAPOLE MOMENT NONCONSERVATION
AbstractThe 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.
2018
ISSN0031-9007
Volume120Issue:18Pages:181801
Subject AreaPhysics
MOST Discipline CataloguePhysics, Multidisciplinary
DOI10.1103/PhysRevLett.120.181801
Indexed BySCIE
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/22908
CollectionSCI期刊论文
Affiliation1.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
2.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
3.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
6.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
7.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
Recommended Citation
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.
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