Multiple Detectors for a Short-Baseline Neutrino Oscillation Search Near Reactors

Heeger, K. M.; Littlejohn, B. R.; Mumm, H. P.

doi:10.48550/arxiv.1307.2859

Cited by 5 publications

(7 citation statements)

References 3 publications

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“…These measurements include KamLAND's measurement of reactor anti-neutrino oscillation at a distance of ∼200 km [1], Borexino's measurement of 7 Be solar neutrino oscillation [2], and most recently the short baseline reactor anti-neutrino experiments that measured oscillations due to θ 13 at a distance of 1 km: Daya Bay [3], Double Chooz [4,5], and RENO [6]. Scintillator-based neutrino detectors will continue to be important for the next set of neutrino measurements, from the determination of the neutrino mass hierarchy [7,8] to elastic scattering measurements [9] and sterile neutrino searches [10,11], and for non-proliferation applications [12,13].…”

Section: Introductionmentioning

confidence: 99%

Measuring directionality in double-beta decay and neutrino interactions with kiloton-scale scintillation detectors

et al. 2014

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Large liquid-scintillator-based detectors have proven to be exceptionally effective for low energy neutrino measurements due to their good energy resolution and scalability to large volumes. The addition of directional information using Cherenkov light and fast timing would enhance the scientific reach of these detectors, especially for searches for neutrino-less double-beta decay. In this paper, we develop a technique for extracting particle direction using the difference in arrival times for Cherenkov and scintillation light, and evaluate several detector advances in timing, photodetector spectral response, and scintillator emission spectra that could be used to make direction reconstruction a reality in a kiloton-scale detector.

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Section: Introductionmentioning

confidence: 99%

Measuring directionality in double-beta decay and neutrino interactions with kiloton-scale scintillation detectors

et al. 2014

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“…In contrast, a weakly-mixing (small U e4 ) sterile state with a fast decay to ν e could result in a null ν e disappearance result in PROSPECT but visible ν e -like signatures in short-baseline accelerator experiments. In an alternate example of multiple eV-scale sterile neutrinos, PROSPECT's data can on its own elucidate the nature of the non-mimimal scenario [89]. These examples illustrate how PROSPECT's ν e disappearance datasets will make distinctive contributions to the global program to explore BSM possibilities involving sterile neutrinos.…”

Section: A Broader View Of Sterile Neutrino Searches With Reactorsmentioning

confidence: 99%

“…Anomalous appearance or disappearance results may just as easily reflect additional physics processes beyond the minimal 3+1 oscillations described by Equation 1, such as non-standard neutrino interactions [83], neutrino decay [84][85][86][87], or some combination of processes. The existence of multiple sterile neutrino states would expand the dimensions of Equation 1and introduce additional flavor mixing and CP-violating parameters [88,89]. If righthanded neutral leptons are required to explain non-zero neutrino mass, it may indeed seem natural to have multiple sterile neutrino states.…”

Section: A Broader View Of Sterile Neutrino Searches With Reactorsmentioning

confidence: 99%

PROSPECT-II Physics Opportunities

Andriamirado,

Balantekin,

Band

et al. 2021

Preprint

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The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, has made world-leading measurements of reactor antineutrinos at short baselines. In its first phase, conducted at the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory, PROSPECT produced some of the strongest limits on eVscale sterile neutrinos, made a precision measurement of the reactor antineutrino spectrum from 235 U, and demonstrated the observation of reactor antineutrinos in an aboveground detector with good energy resolution and well-controlled backgrounds. The PROSPECT collaboration is now preparing an upgraded detector, PROSPECT-II, to probe yet unexplored parameter space for sterile neutrinos and contribute to a full resolution of the Reactor Antineutrino Anomaly, a longstanding puzzle in neutrino physics. By pressing forward on the world's most precise measurement of the 235 U antineutrino spectrum and measuring the absolute flux of antineutrinos from 235 U, PROSPECT-II will sharpen a tool with potential value for basic neutrino science, nuclear data validation, and nuclear security applications. Following a two-year deployment at HFIR, an additional PROSPECT-II deployment at a low enriched uranium reactor could make complementary measurements of the neutrino yield from other fission isotopes. PROSPECT-II provides a unique opportunity to continue the study of reactor antineutrinos at short baselines, taking advantage of demonstrated elements of the original PROSPECT design and close access to a highly enriched uranium reactor core.

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“…To demonstrate the oscillation physics reach, we present sensitivity studies assuming the existence of one sterile neutrino in addition to the three known neutrino species, commonly referred to as the 3 + 1 model. We note that PROSPECT's broad baseline range and in particular its extended reach in L/E during Phase II will also provide sensitivity to multiple sterile neutrinos [45]. The choice of many input parameters is informed by the PROSPECT R&D program.…”

Section: Prospect Physics Program and Discovery Potentialmentioning

confidence: 99%

The PROSPECT physics program

Ashenfelter¹,

Balantekin²,

Band³

et al. 2016

J. Phys. G: Nucl. Part. Phys.

105

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The Precision Reactor Oscillation and Spectrum Experiment, PROSPECT, is designed to make a precise measurement of the antineutrino spectrum from a highly-enriched uranium reactor and probe eV-scale sterile neutrinos by searching for neutrino oscillations over meter-long distances. PROSPECT is conceived as a 2-phase experiment utilizing segmented 6 Li-doped liquid scintillator detectors for both efficient detection of reactor antineutrinos through the inverse beta decay reaction and excellent background discrimination. PROSPECT Phase I consists of a movable 3-ton antineutrino detector at distances of 7-12 m from the reactor core. It will probe the best-fit point of the ν e disappearance experiments at 4σ in 1 year and the favored region of the sterile neutrino parameter space at >3σ in 3 years. With a second antineutrino detector at 15-19 m from the reactor, Phase II of PROSPECT can probe the entire allowed parameter space below 10 eV 2 at 5σ in 3 additional years. The measurement of the reactor antineutrino spectrum and the search for short-baseline oscillations with PROSPECT will test the origin of the spectral deviations observed in recent θ 13 experiments, search for sterile neutrinos, and conclusively address the hypothesis of sterile neutrinos as an explanation of the reactor anomaly.

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Multiple Detectors for a Short-Baseline Neutrino Oscillation Search Near Reactors

Cited by 5 publications

References 3 publications

Measuring directionality in double-beta decay and neutrino interactions with kiloton-scale scintillation detectors

Measuring directionality in double-beta decay and neutrino interactions with kiloton-scale scintillation detectors

PROSPECT-II Physics Opportunities

The PROSPECT physics program

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