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New Ambiguity in Probing CP Violation in Neutrino Oscillations

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	Miranda, O.G.; Tórtola Baixauli, María Amparo Perfil; Furtado Valle, José Wagner Perfil
	This document is a artículoDate2016
	Este documento está disponible también en : http://hdl.handle.net/10550/70155
	If neutrinos get mass via the seesaw mechanism the mixing matrix describing neutrino oscillations can be effectively nonunitary. We show that in this case the neutrino appearance probabilities involve a new CP phase ϕ associated with nonunitarity. This leads to an ambiguity in extracting the "standard" three-neutrino phase δCP, which can survive even after neutrino and antineutrino channels are combined. Its existence should be taken into account in the planning of any oscillation experiment aiming at a robust measurement of δCP.
	Miranda, O.G. Tórtola Baixauli, María Amparo Furtado Valle, José Wagner 2016 New Ambiguity in Probing CP Violation in Neutrino Oscillations Physical Review Letters 117 6 061804-1 061804-5
	https://doi.org/10.1103/PhysRevLett.117.061804