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Probing CP violation with non-unitary mixing in long-baseline neutrino oscillation experiments: DUNE as a case study

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Probing CP violation with non-unitary mixing in long-baseline neutrino oscillation experiments: DUNE as a case study

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dc.contributor.author	Escrihuela Ferrándiz, Francisco Javier
dc.contributor.author	Vanegas Forero, David
dc.contributor.author	Miranda, O.G.
dc.contributor.author	Tórtola Baixauli, María Amparo
dc.contributor.author	Furtado Valle, José Wagner
dc.date.accessioned	2019-05-15T13:31:26Z
dc.date.available	2019-05-15T13:31:26Z
dc.date.issued	2017
dc.identifier.citation	Escrihuela Ferrándiz, Francisco Javier Vanegas Forero, David Miranda, O.G. Tórtola Baixauli, María Amparo Furtado Valle, José Wagner 2017 Probing CP violation with non-unitary mixing in long-baseline neutrino oscillation experiments: DUNE as a case study New Journal of Physics 19 093005-1 093005-14
dc.identifier.uri	http://hdl.handle.net/10550/70186
dc.description.abstract	When neutrino masses arise from the exchange of neutral heavy leptons, as in most seesaw schemes, the effective lepton mixing matrix N describing neutrino propagation is non-unitary, hence neutrinos are not exactly orthonormal. New CP violation phases appear in N that could be confused with the standard phase δCP characterizing the three neutrino paradigm. We study the potential of the long-baseline neutrino experiment DUNE in probing CP violation induced by the standard CP phase in the presence of non-unitarity. In order to accomplish this we develop our previous formalism, so as to take into account the neutrino interactions with the medium, important in long baseline experiments such as DUNE. We find that the expected CP sensitivity of DUNE is somewhat degraded with respect to that characterizing the standard unitary case. However the effect is weaker than might have been expected thanks mainly to the wide neutrino beam. We also investigate the sensitivity of DUNE to the parameters characterizing non-unitarity. In this case we find that there is no improvement expected with respect to the current situation, unless the near detector setup is revamped.
dc.language.iso	eng
dc.relation.ispartof	New Journal of Physics, 2017, vol. 19, p. 093005-1-093005-14
dc.subject	Partícules (Física nuclear)
dc.subject	Violació CP (Física nuclear)
dc.title	Probing CP violation with non-unitary mixing in long-baseline neutrino oscillation experiments: DUNE as a case study
dc.type	journal article	es_ES
dc.date.updated	2019-05-15T13:31:27Z
dc.identifier.doi	10.1088/1367-2630/aa79ec
dc.identifier.idgrec	120883
dc.rights.accessRights	open access	es_ES