ITP OpenIR  > 理论物理所1978-2010年知识产出
P-odd and CP-odd four-quark contributions to neutron EDM
An, Haipeng; Ji, Xiangdong; Xu, Fanrong; An, HP , Univ Maryland, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA
2010
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
ISSN1126-6708
期号2页码:-
摘要In a class of beyond-standard-model theories, CP-odd observables, such as the neutron electric dipole moment, receive significant contributions from flavor-neutral P-odd and CP-odd four-quark operators. However, considerable uncertainties exist in the hadronic matrix elements of these operators strongly affecting the experimental constraints on CP-violating parameters in the theories. Here we study their hadronic matrix elements in combined chiral perturbation theory and nucleon models. We first classify the operators in chiral representations and present the leading-order QCD evolutions. We then match the four-quark operators to the corresponding ones in chiral hadronic theory, finding symmetry relations among the matrix elements. Although this makes lattice QCD calculations feasible, we choose to estimate the non-perturbative matching coefficients in simple quark models. We finally compare the results for the neutron electric dipole moment and P-odd and CP-odd pion-nucleon couplings with the previous studies using naive factorization and QCD sum rules. Our study shall provide valuable insights on the present hadronic physics uncertainties in these observables.
部门归属[An, HP; Ji, XD] Univ Maryland, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA; [An, HP; Ji, XD] Univ Maryland, Dept Phys, College Pk, MD 20742 USA; [Ji, XD] Shanghai Jiao Tong Univ, Inst Particle Phys & Cosmol, Dept Phys, Shanghai 200240, Peoples R China; [Ji, XD] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China; [Ji, XD] Peking Univ, Inst Theoret Phys, Beijing 100871, Peoples R China; [Xu, FR] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
关键词Electric-dipole Moment Qcd Sum-rules Quantum Chromodynamics Supersymmetric Models Field-theory Violation Conservation Constraints Invariance Nucleons
学科领域Physics
资助者U.S. Department of Energy[DE-FG02-93ER-40762]; China ; U.S. Department of Energy[DE-FG02-93ER-40762]; China ; U.S. Department of Energy[DE-FG02-93ER-40762]; China ; U.S. Department of Energy[DE-FG02-93ER-40762]; China
URL查看原文
收录类别SCI
资助者U.S. Department of Energy[DE-FG02-93ER-40762]; China ; U.S. Department of Energy[DE-FG02-93ER-40762]; China ; U.S. Department of Energy[DE-FG02-93ER-40762]; China ; U.S. Department of Energy[DE-FG02-93ER-40762]; China
WOS记录号WOS:000275223100043
引用统计
被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5174
专题理论物理所1978-2010年知识产出
通讯作者An, HP , Univ Maryland, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA
推荐引用方式
GB/T 7714
An, Haipeng,Ji, Xiangdong,Xu, Fanrong,et al. P-odd and CP-odd four-quark contributions to neutron EDM[J]. JOURNAL OF HIGH ENERGY PHYSICS,2010(2):-.
APA An, Haipeng,Ji, Xiangdong,Xu, Fanrong,&An, HP , Univ Maryland, Maryland Ctr Fundamental Phys, College Pk, MD 20742 USA.(2010).P-odd and CP-odd four-quark contributions to neutron EDM.JOURNAL OF HIGH ENERGY PHYSICS(2),-.
MLA An, Haipeng,et al."P-odd and CP-odd four-quark contributions to neutron EDM".JOURNAL OF HIGH ENERGY PHYSICS .2(2010):-.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
P-odd and CP-odd fou(1327KB) 开放获取使用许可请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[An, Haipeng]的文章
[Ji, Xiangdong]的文章
[Xu, Fanrong]的文章
百度学术
百度学术中相似的文章
[An, Haipeng]的文章
[Ji, Xiangdong]的文章
[Xu, Fanrong]的文章
必应学术
必应学术中相似的文章
[An, Haipeng]的文章
[Ji, Xiangdong]的文章
[Xu, Fanrong]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。