New experimental limits on νe→ντ oscillations in 2-ν and 3-ν mixing schemes

Armbruster, B.; Blair, I.M.; Bodmann, B.; Booth, N. E.; Drexlin, G.; Eberhard, V.; Edgington, J.A.; Eichner, Carolyn J.; Eitel, K.; Finckh, E.; Gemmeke, H.; Hößl, J.; Jannakos, T.; Jünger, P.; Kleifges, M.; Kleinfeller, J.; Kretschmer, W.; Maschuw, R.; Oehler, C.; Plischke, P.; Rapp, J.; Ruf, C.; Steidl, M.; Stumm, O.; Wolf, J.; Zeitnitz, B.

doi:10.1103/physrevc.57.3414

Cited by 72 publications

(42 citation statements)

References 43 publications

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“…Presently KARMEN experiment at the Rutherford laboratory is also searching for the same oscillation. While they have found about eight events as of this writing, this is consistent with their expected background [13]. The proposed MiniBooNE experiment Fermilab [12] will provide more definitive information on this very important process in the next five years.…”

Section: Experimental Indications For Neutrino Massessupporting

confidence: 71%

Theories of Neutrino Masses and Mixings

Mohapatra¹

2001

Current Aspects of Neutrino Physics

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Section: Experimental Indications For Neutrino Massessupporting

confidence: 71%

Theories of Neutrino Masses and Mixings

Mohapatra¹

2001

Current Aspects of Neutrino Physics

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“…6 the T2K confidence region at 90% and 95% CL is compared with ν e disappearance allowed regions from the gallium anomaly and reactor anomaly. The excluded regions from ν e + 12 C → 12 N +e − scattering data of KARMEN [31,32] and LSND [33] experiments and solar neutrino and KamLAND data [34][35][36][37][38][39][40][41][42][43][44][45][46] are also shown. The T2K result excludes part of the gallium anomaly and a small part of the reactor anomaly allowed regions.…”

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confidence: 99%

Search for short baselineνedisappearance with the T2K near detector

Abe¹,

Adam²,

Aihara³

et al. 2015

Phys. Rev. D

122

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The T2K experiment has performed a search for νe disappearance due to sterile neutrinos using 5.9 × 10 20 protons on target for a baseline of 280 m in a neutrino beam peaked at about 500 MeV. A sample of νe CC interactions in the off-axis near detector has been selected with a purity of 63% and an efficiency of 26%. The p-value for the null hypothesis is 0.085 and the excluded region at 95% CL is approximately sin 2 2θee > 0.3 for ∆m 2 eff > 7 eV 2 /c 4 .3 Introduction -In the last two decades, several experiments have observed neutrino oscillations compatible with the hypothesis of neutrino mixing in a three active flavours basis, described by the PMNS matrix [1]. Nevertheless, there exist experimental data that cannot be accommodated in this framework: the deficit of ν e originating from intense radioactive sources in the calibration of the solar neutrino gallium detectors SAGE [2,3] and GALLEX [4] and ν e rates near nuclear reactors [5]. Those experiments cover L/E values of order 1 m/ MeV, where L is the neutrino flight-path and E is the neutrino energy, too large to observe any sizeable effect for the standard neutrino mass differences. These anomalies can be interpreted as neutrino oscillations if the PMNS matrix is extended by introducing a new sterile neutrino ν s (3+1 model) with a mass of order 1 eV/c 2 [5,6]. The

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“…The Karlsruhe Rutherford Medium Energy Neutrino experiment KARMEN searches for neutrino oscillations in different appearance (ν µ → ν e [2] andν µ →ν e ) and disappearance modes (ν e → ν x [3]). The physics program of KARMEN also includes the investigation of ν-nucleus interactions [4] as well as the search for lepton number violating decays of pions and muons and the test of the V-A structure of µ + decay [5].…”

Section: Introductionmentioning

confidence: 99%

The search for neutrino oscillations with KARMEN

Eitel

Zeitnitz

1999

Nuclear Physics B - Proceedings Supplements

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The neutrino experiment KARMEN is situated at the beam stop neutrino source ISIS. It provides νµ's, νe's andνµ's in equal intensities from the π + -µ + -decay at rest (DAR). The oscillation channelνµ→νe is investigated in the appearance mode with a 56 t liquid scintillation calorimeter at a mean distance of 17.7 m from the ν-source looking for p (νe , e + ) n reactions. The cosmic induced background for this oscillation search could be reduced by a factor of 40 due to an additional veto counter installed in 1996. In the data collected through 1997 and 1998 no potential oscillation event was observed. Using a unified approach to small signals this leads to an upper limit for the mixing angle of sin 2 (2Θ) < 1.3 · 10 −3 (90% CL) at large ∆m 2 . The excluded area in (sin 2 (2Θ),∆m 2 ) covers almost entirely the favored region defined by the LSNDνµ→νe evidence.

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New experimental limits on νe→ντ oscillations in 2-ν and 3-ν mixing schemes

Cited by 72 publications

References 43 publications

Theories of Neutrino Masses and Mixings

Theories of Neutrino Masses and Mixings

Search for short baselineνedisappearance with the T2K near detector

The search for neutrino oscillations with KARMEN

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