On The Decaying-Sterile Neutrino Solution to the Electron (Anti)Neutrino Appearance Anomalies

de Gouvêa, André; Peres, O. L. G.; Prakash, Suprabh; Stenico, G. V.

doi:10.48550/arxiv.1911.01447

Cited by 10 publications

(15 citation statements)

References 38 publications

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“…In the previously described minimal 3+1 sterile oscillation case, matrix elements U e4 and U µ4 are defined by the mixing angles θ 14 and θ 24 . 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].…”

Section: A Broader View Of Sterile Neutrino Searches With Reactorsmentioning

confidence: 99%

“…Non-minimal 3+1 models can relax that incompatibility in a variety of ways. For example, an unstable sterile fourth mass state may decay into lighter ν e or ν µ , which can enhance ν e appearance signatures or diminish ν µ disappearance signatures, respectively, while leaving other channels largely untouched [85,86]. Some non-minimal sterile models can also relieve tension between interpretations of cosmology-oriented astrophysics datasets [91] and terrestrial experiments [92][93][94][95].…”

Section: A Broader View Of Sterile Neutrino Searches With Reactorsmentioning

confidence: 99%

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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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Section: A Broader View Of Sterile Neutrino Searches With Reactorsmentioning

confidence: 99%

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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“…Another class of models introduces heavy neutrinos with masses around O(1) MeV that are produced at the target and in the decay pipe, which rapidly decay into a final state including an electron neutrino and thus enhance the electron neutrino flux at the detector [505][506][507][508].…”

Section: Non Oscillatory Explanations Of the Appearance Anomalymentioning

confidence: 99%

Unveiling Hidden Physics at the LHC

Fischer¹,

Garcia²,

Antusch³

et al. 2021

Preprint

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The field of particle physics is at the crossroads. The discovery of a Higgs-like boson completed the Standard Model (SM), but the lacking observation of convincing resonances Beyond the SM (BSM) offers no guidance for the future of particle physics. On the other hand, the motivation for New Physics has not diminished and is, in fact, reinforced by several striking anomalous results in many experiments. Here we summarise the status of the most significant anomalies, including the most recent results for the flavour anomalies, the multi-lepton anomalies at the LHC, the Higgs-like excess at around 96 GeV, and anomalies in neutrino physics, astrophysics, cosmology, and cosmic rays.While the LHC promises up to 4 ab −1 of integrated luminosity and far-reaching physics programmes to unveil BSM physics, we consider the possibility that the latter could be tested with present data, but that systemic shortcomings of the experiments and their search strategies may preclude their discovery for several reasons, including: final states consisting in soft particles only, associated production processes, QCD-like final states, close-by SM resonances, and SUSY scenarios where no missing energy is produced.New search strategies could help to unveil the hidden BSM signatures, devised by making use of the CERN open data as a new testing ground. We discuss the CERN open data with its policies, challenges, and potential usefulness for the community. We showcase the example of the CMS collaboration, which is the only collaboration regularly releasing some of its data. We find it important to stress that individuals using public data for their own research does not imply competition with experimental efforts, but rather provides unique opportunities to give guidance for further BSM searches by the collaborations.Wide access to open data is paramount to fully exploit the LHCs potential.

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“…In earlier discussions, the SM diagram with active neutrino ν e in the final state does not interfere with the sterile neutrino contribution due to different final states, one is active neutrino and the other sterile neutrino. This is based on the assumption of ignoring the active-sterile mixing which is always achievable since the existence of sterile neutrino has not been established by neutrino oscillation experiments [51][52][53], although the decay of a keV neutrino could explain the LSND and MiniBooNE excess [54].…”

Section: Interplay With the Sm Counterpartsmentioning

confidence: 99%

Solar Neutrino Scattering with Electron into Massive Sterile Neutrino

Ge,

Pasquini,

Sheng

2020

Preprint

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The recent Xenon1T excess can be explained by solar neutrino scattering with electron via a light mediator, either scalar or vector, in addition to many other explanations from the dark sector. Since only the recoil electron is observable, a keV sterile neutrino instead of an active neutrino can appear in the final state. The sterile neutrino allows pseudoscalar mediator to explain the Xenon1T excess which was thought impossible. In addition, nonzero recoil energy lower bound arises from the sterile neutrino mass, which can be used to testify if the sterile neutrino is massive or not. We also briefly discuss the case of sterile neutrino final state with light Z mediator.

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On The Decaying-Sterile Neutrino Solution to the Electron (Anti)Neutrino Appearance Anomalies

Cited by 10 publications

References 38 publications

PROSPECT-II Physics Opportunities

PROSPECT-II Physics Opportunities

Unveiling Hidden Physics at the LHC

Solar Neutrino Scattering with Electron into Massive Sterile Neutrino

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