CCAST, World Lab, Beijing 100080, Peoples R China
; Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
In a novel parametrization of neutrino mixing and in the approximation of tau-lepton dominance, we show that the one-loop renormalization-group equations (RGEs) of Dirac neutrinos are different from those of Majorana neutrinos even if two Majorana CP-violating phases vanish. As the latter can keep vanishing from the electroweak scale to the typical seesaw scale, it makes sense to distinguish between the RGE running effects of neutrino mixing parameters in Dirac and Majorana cases. The differences are found to be quite large in the minimal supersymmetric standard model with sizable tan beta, provided the masses of three neutrinos are nearly degenerate or have an inverted hierarchy.
Xing ZZ,Zhang H,Xing, ZZ,et al. Distinguishable RGE running effects between dirac neutrinos and majorana neutrinos with vanishing majorana CP-Violating phases[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2007,48(3):525-530.
邢志忠,张贺,Xing, ZZ,&Zhang, H.(2007).Distinguishable RGE running effects between dirac neutrinos and majorana neutrinos with vanishing majorana CP-Violating phases.COMMUNICATIONS IN THEORETICAL PHYSICS,48(3),525-530.
邢志忠,et al."Distinguishable RGE running effects between dirac neutrinos and majorana neutrinos with vanishing majorana CP-Violating phases".COMMUNICATIONS IN THEORETICAL PHYSICS 48.3(2007):525-530.