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A simple analytic three-flavour description of the day night effect in the solar neutrino flux

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A simple analytic three-flavour description of the day night effect in the solar neutrino flux

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dc.contributor.author Akhmedov, Evgeny Kh.
dc.contributor.author Tórtola Baixauli, María Amparo
dc.contributor.author Furtado Valle, José Wagner
dc.date.accessioned 2015-09-30T12:09:47Z
dc.date.available 2015-09-30T12:09:47Z
dc.date.issued 2004
dc.identifier.citation Akhmedov, Evgeny Kh. Tórtola Baixauli, María Amparo Furtado Valle, José Wagner 2004 A simple analytic three-flavour description of the day night effect in the solar neutrino flux Journal of High Energy Physics 2004 5 057
dc.identifier.uri http://hdl.handle.net/10550/47501
dc.description.abstract In the 3-flavour framework we derive a simple approximate analytic expression for the day-night difference of the flux of solar νe at terrestrial detectors which is valid for an arbitrary Earth density profile. Our formula has the accuracy of a few per cent and reproduces all the known analytic expressions for the Earth matter effects on the solar neutrino oscillations obtained under simplifying assumptions about the Earth's density profile (matter of constant density, 3 layers of constant densities, and adiabatic approximation). It can also be used for studying the Earth matter effects on the oscillations of supernova neutrinos. We also discuss the possibility of probing the leptonic mixing angle θ13 through day--night asymmetry measurements at future water Cherenkov solar neutrino detectors. We show that, depending on the measured value of the asymmetry, the current upper bound on θ13 may be improved, or even a lower bound on this mixing parameter may be obtained.
dc.language.iso eng
dc.relation.ispartof Journal of High Energy Physics, 2004, vol. 2004, num. 5, p. 057
dc.subject Física
dc.title A simple analytic three-flavour description of the day night effect in the solar neutrino flux
dc.type journal article es_ES
dc.date.updated 2015-09-30T12:09:47Z
dc.identifier.doi 10.1088/1126-6708/2004/05/057
dc.identifier.idgrec 018341
dc.rights.accessRights open access es_ES

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