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Commutators of Lepton Mass Matrices, CP Violation, and Matter Effects in Medium-Baseline Neutrino Experiments | | Zhi-zhong Xing
; | | Date: |
26 Sep 2000 | | Journal: | Phys.Rev. D63 (2001) 073012 | | Subject: | hep-ph hep-ex | | Abstract: | We introduce the commutators of lepton mass matrices to describe the phenomenon of lepton flavor mixing, and establish their relations to the effective Hamiltonians responsible for the propagation of Dirac and Majorana neutrinos. The determinants of those commutators are invariant under matter effects, leading to an instructive relationship between the universal CP-violating parameters in vacuum and in matter. In the scenario of low-energy (100 MeV leq E leq 1 GeV) and medium-baseline (100 km leq L leq 400 km) neutrino experiments, we illustrate the features of lepton flavor mixing and CP violation. The terrestrial matter effects on CP- and T-violating asymmetries in
u_mu o
u_e and $ar{
u}_mu o ar{
u}_e neutrino oscillations are also discussed. We demonstrate that a relatively pure signal of leptonic CP violation at the percent level can be established from such medium-baseline experiments with low-energy neutrino beams. | | Source: | arXiv, hep-ph/0009294 | | Services: | Forum | Review | PDF | Favorites | |
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