Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-09-19
Phys.Rev. D63 (2001) 073001
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 8 encapsulated postscript figures
Scientific paper
10.1103/PhysRevD.63.073001
We establish the most stringent experimental constraints coming from recent terrestrial neutrino experiments on quantum mechanical decoherence effects in neutrino systems. Taking a completely phenomenological approach, we probe vacuum oscillations plus quantum decoherence between two neutrino species in the channels $\nu_\mu \to \nu_\tau$, $\nu_\mu \to \nu_e$ and $\nu_e \to \nu_\tau$, admitting that the quantum decoherence parameter $\gamma$ is related to the neutrino energy $E_\nu$ as : $\gamma=\gamma_0 (E_\nu/\text{GeV})^{n}$, with $n=-1,0,1$ and 2. Our bounds are valid for a neutrino mass squared difference compatible with the atmospheric, the solar and, in many cases, the LSND scale. We also qualitatively discuss the perspectives of the future long baseline neutrino experiments to further probe quantum dissipation.
Funchal Renata Zukanovich
Gago Alberto M.
Moura E. M.
Teves Walter J. C.
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