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Título

MINOS and CPT violating neutrinos

AutorBarenboim, Gabriela ; Lykken, Joseph D.
Palabras claveNeutrinos
CPT violation
Fecha de publicación21-dic-2009
EditorAmerican Physical Society
CitaciónPhysical Review - Section D - Particles and Fields 80 (11): 113008 (2009)
ResumenWe review the status of CPT violation in the neutrino sector. Apart from LSND, current data favors three flavors of light stable neutrinos and antineutrinos, with both halves of the spectrum having one smaller mass splitting and one larger mass splitting. Oscillation data for the smaller splitting are consistent with CPT. For the larger splitting, current data favor an antineutrino mass-squared splitting that is an order of magnitude larger than the corresponding neutrino splitting, with the corresponding mixing angle less than maximal. This CPT-violating spectrum is driven by recent results from MINOS, but is consistent with other experiments if we ignore LSND. We describe an analysis technique which, together with MINOS running optimized for muon antineutrinos, should be able to conclusively confirm the CPT-violating spectrum proposed here, with as little as 3 times the current data set. If confirmed, the CPT-violating neutrino mass-squared difference would be an order of magnitude less than the current most-stringent upper bound on CPT violation for quarks and charged leptons.
Versión del editorhttp://dx.doi.org/ 10.1103/PhysRevD.80.113008
URIhttp://hdl.handle.net/10261/23239
DOI10.1103/PhysRevD.80.113008
ISSN1550-7998
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