The Effective Lagrangian of QED with a Magnetic Charge and Dyon Mass Bounds

Details The Effective Lagrangian of QED with a Magnetic Charge and Dyon Mass Bounds The Effective Lagrangian of QED with a Magnetic Charge and Dyon Mass Bounds

1997-02-23

arxiv.org/abs/hep-ph/9702402v1

Phys.Rev. D55 (1997) 5807-5812

Physics

High Energy Physics

High Energy Physics - Phenomenology

Accepted in Phys. Rev. D, 15 pages, 1 figure

Scientific paper

10.1103/PhysRevD.55.5807

The effective Lagrangian of QED coupled to dyons is calculated. The resulting generalization of the Euler-Heisenberg Lagrangian contains non-linear P and T noninvariant terms corresponding to the virtual pair creation of dyons. The corresponding P and T violating part of the matrix element for light-by-light scattering is considered. This effect induces an electric dipole moment for the electron, of order M^{-2}, where M is the dyon mass. The current limit on the electric dipole moment of the electron yields the lower dyon mass bound M > 1 TeV.

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