Active-active and active-sterile neutrino oscillation solutions to the atmospheric neutrino anomaly
نویسندگان
چکیده
منابع مشابه
Active-active and active-sterile neutrino oscillation solutions to the atmospheric neutrino anomaly
We perform a fit to the full data set corresponding to 33.0 kt-yr of data of the Super-Kamiokande experiment as well as to all other experiments in order to compare the two most likely solutions to the atmospheric neutrino anomaly in terms of oscillations in the νμ → ντ and νμ → νs channels. Using state-ofthe-art atmospheric neutrino fluxes we have determined the allowed regions of oscillation ...
متن کاملAtmospheric neutrino data : Active-Active × Active-Sterile oscillations
Atmospheric showers are initiated when primary cosmic rays hit the Earth’s atmosphere. Secondary mesons produced in this collision, mostly pions and kaons, decay and give rise to electron and muon neutrino and anti-neutrinos fluxes [1]. In the past Fréjus and NUSEX [2] reported a R-value (R = (μ/e)data/(μ/e)MC) consistent with one, therefore other detectors like Kamiokande, IMB and Soudan-2 [3]...
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The atmospheric neutrino data are nicely explained in terms of neutrino oscillations νμ ↔ να. Even though recent results favour the solution α = τ , the possibility that να is a sterile neutrino is still not completely excluded by Earth experiments. In anycase it is an interesting issue to know whether the BBN bound is able to rule out the solution νμ ↔ νs. Neutrino oscillations are potentially...
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We suggest the possibility that the anomalies observed in the LSND experiment and the Gallium radioactive source experiments may be due to neutrino oscillations generated by a large squared-mass difference of about 20 − 30 eV. We consider the simplest 3+1 four-neutrino scheme that can accommodate also the observed solar and atmospheric neutrino oscillations. We show that, in this framework, the...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1999
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(98)00834-7