期刊
PHYSICAL REVIEW D
卷 85, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.85.114044
关键词
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资金
- Ministry of Education, Science, Sports, and Culture (MEXT), Japan [20244037, 20540252, 22244021, 23104011]
- World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan
- Japan Society for the Promotion of Science for Young Scientists
- Grants-in-Aid for Scientific Research [20540252, 12J10029] Funding Source: KAKEN
We study the neutron electric dipole moment in the presence of the CP-violating operators up to dimension five in terms of the QCD sum rules. It is found that the operator product expansion calculation is robust when exploiting a particular interpolating field for a neutron, while there exist some uncertainties on the phenomenological side. By using input parameters obtained from the lattice calculation, we derive a conservative limit for the contributions of the CP-violating operators. We also show the detail of the derivation of the sum rules.
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