A brief review is given of recent analyses of the effects of CP phases on the supersymmetric QCD and supersymmetric electroweak contibutions to the b and t quark masses and to the τ lepton mass in SUGRA models. The effects of CP phases on the supersymmetric contributions are found to be significanlty large for the b quark mass as they can change both its sign and its magnitude. Thus with the inclusion of CP phases the supersymmetric correction to the b quark mass can be as much as fifty percent or more of the total b quark mass. For the case of the τ lepton, the effects of CP phases on the supersymmetric correction is also relatively large as it can again affect both the sign and the magnitude of the τ mass correction. However, in this case the overall correction is found to be only a few percent. The effect of CP phases on SUSY contribution to the t quark mass was also investigated. However, in this case the overall correction is less than a percent with or without the inclusion of phases. These results have important implications for b − τ unification and for b − t − τ unification in the context of unified theories.
CP phases, quark masses, tau lepton mass, SUGRA models, high energy physics phenomenology
CP violation (Nuclear physics), Supersymmetry, Phenomenological theory (Physics)
Ibrahim, Tarek and Nath, Pran, "Corrections to b, t quark masses and τ lepton mass in SUGRA including CP phases" (2003). Physics Faculty Publications. Paper 76. http://hdl.handle.net/2047/d20000429
Click button above to open, or right-click to save.