Electric dipole moments: A global analysis
We perform a global analysis of searches for the permanent electric dipole moments (EDMs) of the neutron, neutral atoms, and molecules in terms of six leptonic, semileptonic, and nonleptonic interactions involving photons, electrons, pions, and nucleons. By translating the results into fundamental charge-conjugation-parity symmetry (CP) violating effective interactions through dimension six involving standard model particles, we obtain rough lower bounds on the scale of beyond the standard model CP-violating interactions ranging from 1.5 TeV for the electron EDM to 1300 TeV for the nuclear spin-independent electron-quark interaction. We show that planned future measurements involving systems or combinations of systems with complementary sensitivities to the low-energy parameters may extend the mass reach by an order of magnitude or more.
© 2015 American Physical Society. Received 6 August 2014; published 6 March 2015. The authors thank P. Fierlinger and G. Gabrielse for useful discussions and both the Excellence Cluster Universe at the Technical University Munich and the Kavli Institute for Theoretical Physics, where a portion of this work was completed. M.J.R.M. was supported in part by US Department of Energy Contracts No. DE-SC0011095 and No. DE-FG02-08ER4153, by the National Science Foundation under Grant No. NSF PHY11-25915, and by the Wisconsin Alumni Research Foundation (WARF). T.E.C. was supported in part by the US Department of Energy Grant No. DE FG02 04 ER41331.
Submitted - 1407.1064v1.pdf
Published - PhysRevC.91.035502.pdf