Neutrino production states in oscillation phenomena - are they pure or mix ?
نویسنده
چکیده
General quantum mechanical state of neutrinos produced by mechanisms beyond the Standard Model is discussed. Only in the case of relativistic neutrinos and the Standard Model left-handed charge current interaction, neutrino state is pure and described by Maki-Nakagawa-Sakata-Pontecorvo unitary mixing matrix. The problem of Wigner spin rotation, caused by Lorentz transformation from the rest production frame to the laboratory frame is considered. The mixture of the neutrino states as function of their energy and beyond the Standard Model parameters is investigated. Two sources of mixture, the appearance of subdominant helicity states and the mass mixing with several different mixing matrices are studied. PACS : 13.15.+g, 14.60.Pq, 14.60.St
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Neutrino production states in oscillation phenomena - are they pure or mixed ?
General quantum mechanical states of neutrinos produced by mechanisms outside the Standard Model are discussed. The neutrino state is described by the Maki-Nakagawa-Sakata-Pontecorvo unitary mixing matrix only in the case of relativistic neutrinos and Standard Model left-handed charge current interaction. The problem of Wigner spin rotation caused by Lorentz transformation from the rest product...
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تاریخ انتشار 2009