6–8 May 2013
University of Pittsburgh
US/Eastern timezone

An Upper Limit on the Neutron-Antineutron Oscillation Time

6 May 2013, 17:45
15m
Benedum Hall G28 (University of Pittsburgh)

Benedum Hall G28

University of Pittsburgh

Pittsburgh, PA 15260

Speaker

Dr P. S. Bhupal Dev (University of Manchester)

Description

A new scenario for baryogenesis, termed post-sphaleron baryogenesis (PSB), has been proposed wherein the baryon asymmetry of the universe is produced below the electroweak phase transition temperature after the sphaleron processes have gone out of equilibrium. This mechanism arises naturally in quark-lepton unied models. A necessary consequence of this scenario is the baryon number violating B = 2 process of neutron-antineutron oscillations. We show that the constraints of PSB, when combined with the neutrino oscillation data and restrictions from flavor changing neutral currents imply an upper limit on the n-nbar oscillation time, which is accessible to the next generation of proposed experiments.

Author

Dr P. S. Bhupal Dev (University of Manchester)

Presentation materials