Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268


Thu., July 21, 2005, at 3:00 p.m. (refreshments will be served at 2:40 p.m.)

Searching for an Electric Dipole Moment using a Storage Ring

Ed Stephenson, Indiana University Cyclotron Facility
6008 Conference Room

The observation of an electric dipole moment (EDM) by searches currently being developed would be a signal of a new source of CP-violation not present in the Standard Model of particles and forces. This talk will present a proposal to search for an EDM using polarized beams (muons, deuterons, or protons) circulating in a storage ring. The electric field in the particle frame arising from the motion through the magnetic field (v x B) would, if an EDM were present, generate a small precession observable by sensitive polarimeters. Two schemes will be discussed for enhancing the EDM signal in the presence of the magnetic moment precession of the stored particles.