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Three flavor implications of CHOOZ result

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arxiv hep-ph/9712409 v1 pith:KOQ45AGB submitted 1997-12-17 hep-ph

Three flavor implications of CHOOZ result

classification hep-ph
keywords neutrinochoozresultatmosphericdeltaeffectivelylimitsmixing
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We analyze the recent result of the CHOOZ collaboration in the context of mixing and oscillations between all the three neutrino flavors. If one assumes a hierarchy among the vacuum mass eigenvalues (\delta_{21} \ll \delta_{31}), then the CHOOZ result limits the (13) mixing angle \phi to quite small values. This in turn limits the contribution of the \nu_e <--> \nu_\mu oscillation channel to the atmospheric neutrino anomaly to less than 10 percent. It also implies that the solution to the solar neutrino problem is effectively \nu_e <--> \nu_\mu oscillation and that of the atmospheric neutrino problem is effectively \nu_\mu <--> \nu_\tau.

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