Leptonic CP problem in left-right symmetric model

2014/08/31 by Ravi Kuchimanchi · 1 citation
Physics and Astronomy · #hep-ph #hep-ex

paper · pdf · doi:10.1103/physrevd.91.071901

published as Phys. Rev. D 91, 071901 (2015) · Version to appear in Phys. Rev. D, Rapid Communications, April 2015

arxiv created 2015/04/07 · arxiv updated 2015/04/29

Abstract

We find using the minimal left-right symmetric model that the presence of leptonic CP violation can radiatively generate a strong CP phase at the one-loop level itself, which can be beyond the current bounds established by the neutron electic dipole moment experiments. If there are no axions or unnatural cancellations, this leads to the testable prediction that leptonic CP violation must be negligibly small (Dirac phase δ_CP = 0 or π), in a wide and interesting region of parameter space.

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