Analysis of a three flavor neutrino oscillation fit to recent Super-Kamiokande data

Meier, C.; Ohlsson, Tommy

doi:10.1007/s100520000513

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…We turn now to investigations of three-flavor mixing. A number of approaches have been discussed in the literature (62)(63)(64)(65)(66)(67). We review a scenario for subdominant ν µ ↔ ν e that emerges directly from the approximation of one mass scale dominance.…”

Section: Limits On Three-generation Mixingmentioning

confidence: 99%

OSCILLATIONS OF ATMOSPHERIC NEUTRINOS

Jung

Kajita

Mann

et al. 2001

Annu. Rev. Nucl. Part. Sci.

126

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The observation of muon flavor disappearance in the atmospheric neutrino flux provides compelling evidence for neutrino flavor oscillations and, by implication, for nonzero neutrino rest mass. We review recent results from Super-Kamiokande and other underground atmospheric neutrino experiments. These results, along with oscillation limits from reactor experiments, are evaluated in the context of neutrino three-state mixing. A unifying picture with ν µ to ν τ oscillation as the dominant mode emerges; however, certain ambiguities remain. Future directions for further experimentation are discussed.

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Section: Limits On Three-generation Mixingmentioning

confidence: 99%

OSCILLATIONS OF ATMOSPHERIC NEUTRINOS

Jung

Kajita

Mann

et al. 2001

Annu. Rev. Nucl. Part. Sci.

126

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“…These papers attempted to explain both solar and atmospheric neutrino anomalies mainly by maximal ν µ ↔ ν e oscillations driven by ∆ AT M ∼ 10 −3 eV 2 . Although it was claimed in [15,16] that this scenario can provide a good fit to all the available data on neutrino oscillations, it was shown in [17] and also later in [18] that this scenario cannot reproduce the zenith angle dependence of the SK atmospheric neutrino data.…”

Section: Introductionmentioning

confidence: 99%

“…Three-generation picture with the higher mass difference in the eV 2 range and the lower mass difference in the atmospheric range has also been considered in [13,14] (pre-SK) and [15,16,17,18] (post-SK). These papers attempted to explain both solar and atmospheric neutrino anomalies mainly by maximal ν µ ↔ ν e oscillations driven by ∆ AT M ∼ 10 −3 eV 2 .…”

Section: Introductionmentioning

confidence: 99%

A three generation oscillation analysis of the Super-Kamiokande atmospheric neutrino data beyond one mass scale dominance approximation

Choubey

Goswami

Kar

2002

Astroparticle Physics

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In this paper we do a three-generation oscillation analysis of the latest (1144 days) SuperKamiokande (SK) atmospheric neutrino data going beyond the one mass scale dominance (OMSD) approximation. We fix ∆ 12 = ∆ 13 (∆ LSN D ) in the range eV 2 as allowed by the results from LSND and other accelerator and reactor experiments on neutrino oscillation and keep ∆ 23 (∆ AT M ) and the three mixing angles as free parameters. We incorporate the matter effects, indicate some new allowed regions with small ∆ 23 (< 10 −4 eV 2 ) and sin 2 2θ 23 close to 0 and discuss the differences with the two-generation and OMSD pictures. In our scenario, the oscillation probabilities for the accelerator and reactor neutrinos involve only two of the mixing angles θ 12 and θ 13 and one mass scale. But the atmospheric neutrino oscillation is in general governed by both mass scales and all the three mixing angles. The higher mass scale gives rise to ∆m 2 independent average oscillations for atmospheric neutrinos and does not enter the χ 2 analysis as an independent parameter. The ∆ 23 and the three mixing angles on the other hand appear as independent parameters in the χ 2 analysis and the best-fit values of these are determined from an analysis of a) the SK data, b) the SK and CHOOZ data. The allowed values of the mixing angles θ 12 and θ 13 from the above analysis are compared with the constraints from all accelerator and reactor experiments including the latest results from LSND and KARMEN2. Implications for future long baseline experiments are discussed.

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Analysis of a three flavor neutrino oscillation fit to recent Super-Kamiokande data

Cited by 2 publications

References 6 publications

OSCILLATIONS OF ATMOSPHERIC NEUTRINOS

OSCILLATIONS OF ATMOSPHERIC NEUTRINOS

A three generation oscillation analysis of the Super-Kamiokande atmospheric neutrino data beyond one mass scale dominance approximation

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