The Neutron and the Electron Electric Dipole Moment in N=1 Supergravity Unification

Details The Neutron and the Electron Electric Dipole Moment in N=1 Supergravity Unification The Neutron and the Electron Electric Dipole Moment in N=1 Supergravity Unification

1997-08-25

arxiv.org/abs/hep-ph/9708456v3

Phys.Rev. D57 (1998) 478-488; Erratum-ibid. D58 (1998) 019901

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages,Latex,3 figures, added a few lines,a new reference, corrected a typo, to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.57.478

An analysis of the neutron EDM and of the electron EDM in minimal N=1 supergravity unification with two CP violating phases is given. For the neutron the analysis includes the complete one loop gluino, chargino, and neutralino exchange diagrams for the electric dipole and the chromoelectric dipole operators, and also the contribution of the purely gluonic dimension six operator. It is shown that there exist significant regions in the six dimensional parameter space of the model where cancellations between the gluino and the chargino exchanges reduce the electric and the chromoelectric contributions, and further cancellations among the electric, the chromoelectric, and the purely gluonic parts lead to a dramatic lowering of the neutron EDM sometimes below the electron EDM value. This phenomenon gives a new mechanism, i.e., that of internal cancellations, for the suppression of the neutron EDM in supersymmetric theories. The cancellation mechanism can significantly reduce the severe fine tuning problem associated with CP violating phases in SUSY and SUGRA unified models.

Affiliated with

Also associated with

No associations

Rating

The Neutron and the Electron Electric Dipole Moment in N=1 Supergravity Unification does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Neutron and the Electron Electric Dipole Moment in N=1 Supergravity Unification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Neutron and the Electron Electric Dipole Moment in N=1 Supergravity Unification will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-583145