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arXiv · 1204.2653

Reevaluation of Neutron Electric Dipole Moment with QCD Sum Rules

Junji Hisano·Jeong Yong Lee·Natsumi Nagata·Yasuhiro Shimizu
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Abstract

We study the neutron electric dipole moment in the presence of the CP-violating operators up to the dimension five in terms of the QCD sum rules. It is found that the OPE calculation is robust when exploiting a particular interpolating field for 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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Junji Hisano, Jeong Yong Lee, Natsumi Nagata, Yasuhiro Shimizu. 2012-05-27. Reevaluation of Neutron Electric Dipole Moment with QCD Sum Rules. https://doi.org/10.1103/physrevd.85.114044

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