Light neutrino propagation in matter without heavy neutrino decoupling
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Lepton flavor violationCP violationOscillationsMixingsMassesParticles
Águila, F.; Zralek, M. Light neutrino propagation in matter without heavy neutrino decoupling. Acta Physica Polonica B, 33(9): 2585-2596 (2002). [http://hdl.handle.net/10481/32461]
PatrocinadorThe work was supported in part by the Polish State Committee for Scientific Research (KBN) under Grant 2P03B05418, MCYT under contract FPA2000-1558, Junta de Andalucía group FQM101 and the European Community's Human Potential Programme under contract HPRN-CT-2000-00149 Physics at Colliders.
We review the propagation of light neutrinos in matter assuming that their mixing with heavy neutrinos is close to present experimental limits. The phenomenological implications of the non-unitarity of the light neutrino mixing matrix for neutrino oscillations are discussed. In particular we show that the resonance effect in neutrino propagation in matter persists, but for slightly modified values of the parameters and with the maximum reduced by a small amount proportional to the mixing between light and heavy neutrinos squared.