The Electric Dipole Moment of the Nucleons in Holographic QCD
Deog Ki Hong, Hyun-Chul Kim, Sanjay Siwach, Ho-Ung Yee
TL;DR
This paper models CP-violation effects in nucleons using holographic QCD, estimating electric dipole moments and predicting a new sum rule relating proton and neutron moments.
Contribution
It introduces a holographic QCD framework to calculate nucleon electric dipole moments and predicts a novel sum rule linking proton and neutron moments.
Findings
Neutron EDM estimated as 1.08 x 10^{-16} theta e cm.
Proton EDM predicted to be the negative of neutron EDM.
A new sum rule for baryon electric dipole moments is proposed.
Abstract
We introduce the strong CP-violation in the framework of AdS/QCD model and calculate the electric dipole moments of nucleons as well as the CP-violating pion-nucleon coupling. Our holographic estimate of the electric dipole moments gives for the neutron d_n=1.08 X 10^{-16} theta (e cm), which is comparable with previous estimates. We also predict that the electric dipole moment of the proton should be precisely the minus of the neutron electric dipole moment, thus leading to a new sum rule on the electric dipole moments of baryons.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.