Magnetic field dependence of muonium-antimuonium conversion
Abstract We study the magnetic field dependence of muonium-antimuonium conversion for all relevent operators, such as ( V − A ) ( V − A ), ( V − A ) ( V + A ), SS and PP . The traditional ( V − A ) ( V − A ) interaction suffers two stage quenching and becomes strongly suppressed by 10 3 Gauss fields or higher. In contrast, all other operator types (except ( S − P ) ( S − P )) have a weaker field dependence and in general are not strongly quenched by strong fields. Since ongoing experiments are done with sizable magnetic fields, our results are useful for the interpretation of experimental results as bounds on different effective interactions.
SU(15) grand unification.
A grand unified model based on SU(15) is described. Baryon-numbe-violating processes such as proton decay are absent in both the gauge and Higgs sectors. A number of new gauge bosons are predicted at Superconducting Super Collider energy, including doubly charged gauge bosons coupling only to leptons.
A new embedding of quantum electrodynamics in a non-abelian gauge structure
Abstract Motivated by a study of the Dirac equation in quaternionic quantum mechanics, I propose a novel embedding of quantum electrodynamics in an SU(2) non-abelian gauge structure. The construction eliminates the Dirac sea, and implies charge quantization with integer charges. Because of Witten's global SU(2) anomaly, the SU(2)-extended electrodynamics can only appear as a subsector of a larger gauge structure.