CP-violating Phases in M-theory and Implications for EDMs

Details CP-violating Phases in M-theory and Implications for EDMs CP-violating Phases in M-theory and Implications for EDMs

2009-05-18

arxiv.org/abs/0905.2986v2

Phys.Rev.D82:055005,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 5 figures; v2: references added, minor clarifications, version published in Physical Review D

Scientific paper

10.1103/PhysRevD.82.055005

We demonstrate that in effective theories arising from a class of N=1 fluxless compactifications of M-theory on a G2 manifold with low energy supersymmetry, CP-violating phases do not appear in the soft-breaking Lagrangian except via the Yukawas appearing in the trilinear parameters. Such a mechanism may be present in other string compactifications as well; we describe properties sufficient for this to occur. CP violation is generated via the Yukawas since the soft trilinear matrices are generically not proportional to the Yukawa matrices. Within the framework considered, the estimated theoretical upper bounds for electric dipole moments (EDM) of the electron, neutron and mercury are all within the current experimental limits and could be probed in the near future.

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