BEST potential in testing the eV-scale sterile neutrino explanation of reactor antineutrino anomalies

Barinov, Vladislav; Гаврин, В. Н.; Gorbachev, V. V.; Gorbunov, D.; Ибрагимова, Т. В.

doi:10.1103/physrevd.99.111702

Cited by 13 publications

(6 citation statements)

References 27 publications

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“…Originally this idea was proposed for θ 13 measurement using the mono-energetic neutrino emitters and later for sterile neutrino searching [10][11][12][13]. The main candidate for the neutrino source is a well known isotope 51 Cr, which has a few disadvantages: requires huge activity around 5 MCi in order to get rid of the overlapping solar background and a short life-time 27.7 days [2,3,14]. Later, antinetrino emitter was investigated [15].…”

Section: The Methods Of Neutrino Oscillometrymentioning

confidence: 99%

Sterile neutrino oscillometry with Jinping

et al. 2020

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The existence of sterile neutrino is an open question in neutrino physics up to now. The method of neutrino oscillometry provides a powerful tool to test the common 3 + 1 sterile neutrino hypothesis, i.e. three active flavors and one sterile flavor. There are several antineutrino sources which can be used for this method. One of them is the well known isotope chain of $$^{144}\mathrm{Ce}$$144Ce–$$^{144}{\mathrm{Pr}}$$144Pr with initial activity around 50–100 kCi. It has compact size and might be installed either outside or inside the detector. Another one is the short-lived isotope $$^8{\mathrm{Li}}$$8Li, which can be produced in nuclear reaction of a proton beam hitting a beryllium target. The lithium source has only the out-of-detector option due to its large size. The proposed Jinping water-based liquid scintillator detector will be used as a detection volume. Above experimental setups will allow us to cover the current best fit values of oscillation parameters with 90% C.L. At the same time, it is sensitive to the region of the Neutrino-4 result.

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Section: The Methods Of Neutrino Oscillometrymentioning

confidence: 99%

Sterile neutrino oscillometry with Jinping

et al. 2020

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“…This allows to sample the rate at two different distances from the source, at 0.4 m and 0.8 m. At the time of writing, the 50 Cr source material is irradiated at the SM-3 reactor in Dimitrovgrad. Measurements are due to start in July 2019 [139]. Like for solar neutrinos, electron neutrinos from the 51 Cr source will interact in the target by inducing the conversion of the isotope 71 Ga to 71 Ge.…”

Section: Bestmentioning

confidence: 99%

Status of light sterile neutrino searches

Böser

Buck

Giunti

et al. 2020

Progress in Particle and Nuclear Physics

209

195

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A number of anomalous results in short-baseline oscillation may hint at the existence of one or more light sterile neutrino states in the eV mass range and have triggered a wave of new experimental efforts to search for a definite signature of oscillations between active and sterile neutrino states. The present paper aims to provide a comprehensive review on the status of light sterile neutrino searches in mid-2019: we discuss not only the basic experimental approaches and sensitivities of reactor, source, atmospheric, and accelerator neutrino oscillation experiments but also the complementary bounds arising from direct neutrino mass experiments and cosmological observations. Moreover, we review current results from global oscillation analyses that include the constraints set by running reactor and atmospheric neutrino experiments. They permit to set tighter bounds on the active-sterile oscillation parameters but as yet are not able to provide a definite conclusion on the existence of eV-scale sterile neutrinos.

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“…BEST [18] Ga radiochemical and/or with advanced analysis techniques based on the properties of the scintillation or ionization signal. The strategy used to reconstruct E varies according to the primary channel through which neutrinos interact in the detector.…”

Section: Phenomenology and Experimentsmentioning

confidence: 99%

Statistical methods applied to the search of sterile neutrinos

Agostini

Neumair

2020

Eur. Phys. J. C

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The frequentist statistical methods applied to search for short-baseline neutrino oscillations induced by a sterile neutrino with mass at the eV scale are reviewed and compared. The comparison is performed under limit setting and signal discovery scenarios, considering both when an oscillation would enhance the neutrino interaction rate in the detector and when it would reduce it. The sensitivity of the experiments and the confidence regions extracted for specific data sets change considerably according to which test statistic is used and the assumptions on its probability distribution. A standardized analysis approach based on the most general kind of hypothesis test is proposed.

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BEST potential in testing the eV-scale sterile neutrino explanation of reactor antineutrino anomalies

Cited by 13 publications

References 27 publications

Sterile neutrino oscillometry with Jinping

Sterile neutrino oscillometry with Jinping

Status of light sterile neutrino searches

Statistical methods applied to the search of sterile neutrinos

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