Novel Soft-Pion Theorem for Long-Range Nuclear Parity Violation
文献类型：期刊论文
| 作者 | Feng, X2,3,4; Guo, FK ; Seng, CY
|
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2018 |
| 卷号 | 120期号:18页码:181801 |
| ISSN号 | 0031-9007 |
| 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 |
| 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 |
| 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. |
入库方式： OAI收割
来源：理论物理研究所
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