Electron energy spectra, fluxes, and day-night asymmetries of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi /><mml:mrow><mml:mn fontweight="bold">8</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>B solar neutrinos from measurements with NaCl dissolved in the heavy-water detector at the Sudbury Neutrino Observatory

Aharmim, B.; Fleurot, F.; Hallman, E. D.; Krueger, Alan B.; Luoma, S.; Schwendener, M. H.; Tafirout,; Virtue, C. J.; Ahmed, S.; Chen, M.; Duncan, F. A.; Earle, E.D.; Evans, H. C.; Ewan, G. T.; Fulsom, B. G.; Graham, K.; Hallin, A. L.; Handler, W. B.; Harvey, P. J.; Howard, C.

doi:10.1103/physrevc.72.055502

Cited by 501 publications

(197 citation statements)

References 63 publications

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“…Nonzero neutrino mass is now well established [43][44][45][46][47][48][49][50][51][52][53][54][55][56]; therefore, it is crucially important to study the properties of these nonzero-mass neutrinos. One interesting question is whether neutrinos are Majorana or Dirac neutrinos [57,58].…”

Section: Lepton-number-violating Decays With ∆L =mentioning

confidence: 99%

Prospects for rare and forbidden hyperon decays at BESIII

2017

Front. Phys.

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The study of hyperon decays at the Beijing Electron Spectrometer III (BESIII) is proposed to investigate the events of $J/\psi$ decay into hyperon pairs, which provide a pristine experimental environment at the Beijing Electron--Positron Collider II. About $10^{6}$--$10^8$ hyperons, i.e., $\Lambda$, $\Sigma$, $\Xi$, and $\Omega$, will be produced in the $J/\psi$ and $\psi(2S)$ decays with the proposed data samples at BESIII. Based on these samples, the measurement sensitivity of the branching fractions of the hyperon decays is in the range of $10^{-5}$--$10^{-8}$. In addition, with the known center-of-mass energy and "tag technique," rare decays and decays with invisible final states can be probed.Comment: 8 pages, 8 tables, add more references and corrections; many typos fixe

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Section: Lepton-number-violating Decays With ∆L =mentioning

confidence: 99%

Prospects for rare and forbidden hyperon decays at BESIII

2017

Front. Phys.

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“…The combined results showed that m ν 1 > m ν 2 , which resolved one of two mass hierarchy ambiguities [43].…”

Section: Reactor Neutrinosmentioning

confidence: 74%

“…8 B solar neutrinos, φ(ν e ), and φ(ν µ or ν τ ), deduced from the SNO's CC, elastic scattering (ES), and NC results of the salt phase, where salts had been introduced to enhance the NC measurement [40]. The Super-Kamiokande ES flux is from [41].…”

Section: Fig 18: Fluxes Ofmentioning

confidence: 99%

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A measurement of neutrino oscillations with muon neutrinos in the MINOS experiment

Coleman

2011

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PAGEExperimental evidence has established that neutrino flavor states evolve over time. A neutrino of a particular flavor that travels some distance can be detected in a different neutrino flavor state. The Main Injector Neutrino Oscillation Search (MINOS) is a long-baseline experiment that is designed to study this phenomenon, called neutrino oscillations. MI-NOS is based at Fermilab near Chicago, IL, and consists of two detectors: the Near Detector located at Fermilab, and the Far Detector, which is located in an old iron mine in Soudan, MN. Both detectors are exposed to a beam of muon neutrinos from the NuMI beamline, and MINOS measures the fraction of muon neutrinos that disappear after traveling the 734 km between the two detectors. One can measure the atmospheric neutrino mass splitting and mixing angle by observing the energy-dependence of this muon neutrino disappearance. MINOS has made several prior measurements of these parameters.Here I describe recently-developed techniques used to enhance our sensitivity to the oscillation parameters, and I present the results obtained when they are applied to a dataset that is twice as large as has been previously analyzed. We measure the mass splitting ∆m These results comprise the world's best measurement of the atmospheric neutrino mass splitting. Alternative disappearance models are also tested. The neutrino decay hypothesis is disfavored at 7.2σ and the neutrino quantum decoherence hypothesis is disfavored at 9.0σ.

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“…Under this assumption there would be no observable mixing between the sterile and active neutrinos. This conclusion arises from considering the results from the SNO experiment [32] which demonstrate that any coupling between active and sterile neutrinos must take place in the third and fourth mass eigenstates. This would therefore require observation of oscillations at very small mass splittings which would not be possible with the baseline available to the MINOS experiment.…”

Section: Model With M 4 = Mmentioning

confidence: 99%

A search for sterile neutrinos at the MINOS experiment

Pittam

2010

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MINOS is a long baseline neutrino oscillation experiment based at the Fermi National Accelerator Laboratory in Illinois, USA. The experiment was designed to study neutrino oscillation phenomena. The ν µ beam produced by the NuMI beam facility at FNAL is used along with two functionally identical detectors. The Near Detector at FNAL and a Far Detector 735 km away in the Soudan Underground Laboratory in northern Minnesota. Comparison of the observed spectra of neutrinos at the two detectors provides the evidence for neutrino oscillations.This thesis presents work on the postulated phenomena of sterile neutrinos. Oscillations between active and sterile neutrinos will lead to a deficit in the expected rate of measured Neutral Current interactions at the Far Detector. A technique for selecting Neutral Current events utilising an Artificial Neural Network is presented with resulting overall efficiency of 91.1% and purity of 66.0%. A method of predicting the expected Charged and Neutral Current energy spectra at the Far Detector given the data recorded at the Near Detector is presented. A model to search for oscillations between sterile and active neutrinos is developed. Sources of systematic uncertainty that can effect the results of the analysis are discussed.The analysis developed is applied to a Standard Model 3 flavour oscillation model as a cross check under the scenarios with and without ν e appearance. The oscillation parameters measured by this model are ∆m −0.11 for the no ν e appearance result. An analysis of the resulting prediction reveals no evidence for active neutrino disappearance.The analysis is then performed using the 4 flavour neutrino oscillation model developed. Again this is done under the 2 scenarios of ν e appearance and no ν e appearance. The results of this analysis are ∆m −0.19 and θ 34 = 0.00 +0.60 for ν e appearance. This is consistent with no oscillations between active and sterile neutrinos.

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Electron energy spectra, fluxes, and day-night asymmetries of8B solar neutrinos from measurements with NaCl dissolved in the heavy-water detector at the Sudbury Neutrino Observatory

Cited by 501 publications

References 63 publications

Prospects for rare and forbidden hyperon decays at BESIII

Prospects for rare and forbidden hyperon decays at BESIII

A measurement of neutrino oscillations with muon neutrinos in the MINOS experiment

A search for sterile neutrinos at the MINOS experiment

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