The D-Zero experiment recently published results in which the dimuon decay in B-mesons was used to find evidence of this phenomenon. In the thermal leptogenesis model of Fukugita and Yanagida, the degree of this phenomenon is proportional to the degree of CP violation as calculated from the neutrino masses. The baryogenesis mechanism of Affleck and Dine generates this phenomenon via the oscillation of scalar fields, and if this phenomenon held only locally, the boundaries between domains where it did and did not hold would be detectable via gamma radiation, according to the CDRG theory. In order to provide a model of 
The D-Zero experiment recently published results in which the dimuon decay in B-mesons was used to find evidence of this phenomenon. In the thermal leptogenesis model of Fukugita and Yanagida, the degree of this phenomenon is proportional to the degree of CP violation as calculated from the neutrino masses. The baryogenesis mechanism of Affleck and Dine generates this phenomenon via the oscillation of scalar fields, and if this phenomenon held only locally, the boundaries between domains where it did and did not hold would be detectable via gamma radiation, according to the CDRG theory. In order to provide a model of baryogenesis, Sakharov posited baryon number violation, thermal disequilibrium, and CP violation to explain the existence of this phenomenon. For 10 points, identify this phenomenon in which positive energy baryons dominate over negative energy ones, rather than equal amounts existing and annihilating completely into photons.
The D-Zero experiment recently published results in which the dimuon decay in B-mesons was used to find evidence of this phenomenon.
matter-antimatter asymmetry [accept any answer that mentions either the deficiency of antimatter or the excess of matter in the known universe]