Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-05-09
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages, 8 (all new!) figures. Written version of a talk presented at XIII International Workshop on Neutrino Telescopes, Ist
Scientific paper
I report some progress that occurred since NO-VE08 in the field of non-standard interactions (NSI) of neutrinos. After briefly reviewing theoretical developments, I give a summary of the two works in which I was involved. Firstly, we have formulated a perturbative framework to illuminate the global features of neutrino oscillations with NSI, aiming at exploring method for determination of the standard mixing and the NSI parameters. We have recognized that the parameter degeneracy prevails with an extended form which involves the NSI elements. Furthermore, a completely new type of degeneracy is shown to exist. The nature of the former degeneracy is analyzed in detail in the second work. The work is primarily devoted to analyze the problem of discriminating the two CP violation, one due to the lepton Kobayashi-Maskawa phase and the other by phases of the NSI elements. We have shown that the near (3000 km)-far (7000 km) two detector setting in neutrino factory does have the discrimination capability and is sensitivities to CP violation due to NSI to |epsilon_{e\mu}| to \simeq several x 10^{-4} in most of the region of \delta and \phi.
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