Neutron Electric Dipole Moment and Extension of the Standard Model

Details Neutron Electric Dipole Moment and Extension of the Standard Model Neutron Electric Dipole Moment and Extension of the Standard Model

2001-10-04

arxiv.org/abs/hep-ph/0110054v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, LaTeX file. To appear in the Proceedings of RCNP Workshop on Production of Ultra Cold Neutrons and Fundamental Physic

Scientific paper

A nonvanishing value for the electric dipole moment (EDM) of the neutron is a prominent signature for CP violation. The EDM induced by the Kobayashi-Maskawa mechanism of the standard model (SM) has a small magnitude and its detection will be very difficult. However, since baryon asymmetry of the universe cannot be accounted for by the SM, there should exist some other source of CP violation, which may generate a large magnitude for the EDM. One of the most hopeful candidates for physics beyond the SM is the supersymmetric standard model, which contains such sources of CP violation. This model suggests that the EDM has a magnitude not much smaller than the present experimental bounds. Progress in measuring the EDM provides very interesting information about extension of the SM. ........

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