The Electric Dipole Moment of the Nucleons in Holographic QCD

Details The Electric Dipole Moment of the Nucleons in Holographic QCD The Electric Dipole Moment of the Nucleons in Holographic QCD

2007-09-04

arxiv.org/abs/0709.0314v3

JHEP0711:036,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, no figures. v2: A reference and an acknowledgment added. v3: One more reference, to appear in JHEP

Scientific paper

10.1088/1126-6708/2007/11/036

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.

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