Low-energy probes of sterile neutrino transition magnetic moments

Miranda, O. G.; Papoulias, D. K.; Sanders, O.; Tórtola, M.; Valle, J. W. F.

doi:10.1007/jhep12(2021)191

Cited by 42 publications

(23 citation statements)

References 61 publications

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“…Assuming instead the modified iron-filter QF the constraints are slightly tighter, µ ν e 1.1 × 10 −10 µ B for sterile neutrino masses below 100 keV, at for m 4 100 keV). They are competitive with the constraints implied by XENON1T data (indeed more constraining if one focuses only on the nuclear recoil channel) [69], are stronger than those derived from CENNS10 [28] and comparable (or even tighter) than those following from TEXONO depend- ing on the QF model used for the analysis, as can be read directly from the graphs. If compared with explanations of the XENON1T electron excess using electron neutrinos [28], one can see that our results are consistent with that possibility 4 , regardless of the QF choice.…”

Section: B Statistical Analysismentioning

confidence: 72%

“…They are competitive with the constraints implied by XENON1T data (indeed more constraining if one focuses only on the nuclear recoil channel) [69], are stronger than those derived from CENNS10 [28] and comparable (or even tighter) than those following from TEXONO depend- ing on the QF model used for the analysis, as can be read directly from the graphs. If compared with explanations of the XENON1T electron excess using electron neutrinos [28], one can see that our results are consistent with that possibility 4 , regardless of the QF choice. Note that the sterile neutrino dipole portal and NGI results, in contrast to those found for the weak mixing angle, are to a large extent rather insensitive to the QF model.…”

Section: B Statistical Analysismentioning

confidence: 72%

“…Here α EM refers to the electromagnetic fine structure constant and µ ν,Eff to a dimensionless [normalized to the Bohr magneton, µ B = e/(2m e )] parameter space function that involves combinations of the entries of the λ matrix weighted by neutrino mixing angles and possible CP phases (for details see [23,28]). Note that in the limit m 4 → 0, Eq.…”

Section: B Sterile Neutrino Dipole Portalmentioning

confidence: 99%

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Consequences of the Dresden-II reactor data for the weak mixing angle and new physics

Sierra,

De Romeri,

Papoulias

2022

Preprint

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The Dresden-II reactor experiment has recently reported a suggestive evidence for the observation of coherent elastic neutrino-nucleus scattering, using a germanium detector. Given the low recoil energy threshold, these data are particularly interesting for a low-energy determination of the weak mixing angle and for the study of new physics leading to spectral distortions at low momentum transfer. Using two hypotheses for the quenching factor, we study the impact of the data on: (i) The weak mixing angle at a renormalization scale of ∼ 10 MeV, (ii) neutrino generalized interactions with light mediators, (iii) the sterile neutrino dipole portal. The results for the weak mixing angle show a strong dependence on the quenching factor choice. Although still with large uncertainties, the Dresden-II data provide for the first time a determination of sin 2 θ W at such scale using coherent elastic neutrino-nucleus scattering data. Tight upper limits are placed on the light vector, scalar and tensor mediator scenarios. Kinematic constraints implied by the reactor anti-neutrino flux and the ionization energy threshold allow the sterile neutrino dipole portal to produce up-scattering events with sterile neutrino masses up to ∼ 8 MeV. In this context, we find that limits are also sensitive to the quenching factor choice, but in both cases competitive with those derived from XENON1T data and more stringent that those derived with COHERENT data, in the same sterile neutrino mass range.

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Section: B Statistical Analysismentioning

confidence: 72%

Section: B Statistical Analysismentioning

confidence: 72%

Section: B Sterile Neutrino Dipole Portalmentioning

confidence: 99%

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Consequences of the Dresden-II reactor data for the weak mixing angle and new physics

Sierra,

De Romeri,

Papoulias

2022

Preprint

Self Cite

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“…Coherent Elastic neutrino-Nucleus Scattering (CEνNS) is a Standard Model (SM) process that has attracted interest from the Physics community. CEνNS offers the possibility to perform high precision measurements in several processes of the SM [1][2][3][4] as well as exploring New Physics (NP) scenarios in nuclear and particle physics [5][6][7][8][9]. CEνNS was first observed by the COHERENT collaboration using a CsI[Na] crystal [10] and later with a LAr detector [11] in the Spallation source SNS at Oak Ridge.…”

Section: Introductionmentioning

confidence: 99%

New Physics searches in a low threshold scintillating argon bubble chamber measuring coherent elastic neutrino-nucleus scattering in reactors

Alfonso-Pita,

Flores,

Peinado

et al. 2022

Preprint

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The sensitivity to New Physics of a low threshold scintillating argon bubble chamber measuring coherent elastic neutrino-nucleus scattering in reactors is reported. Namely, light scalar mediators, sterile neutrino oscillations, unitarity violation, and non-standard interactions are studied. The results indicate that this detector could be able to set stronger constraints than current limits set by the recent COHERENT measurements. Considering the best scenario, a 100 kg detector located 30 m from a 2000 MW th reactor, a sterile neutrino search would cover most of the space parameter allowed from the reactor anti-neutrino anomaly fit. Unitarity violation studies could set constraints on α11 more stringent than the current oscillation experiments fit. A low threshold argon detector with very low backgrounds has the potential to explore New Physics in different scenarios and set competitive constraints.

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“…[35] initiated a broad study of the relevant parameter space for a dipole portal, and this was recently complemented by a thorough analysis of low-energy and cosmological phenomena [36]. Since these early studies, the viable parameter space for a neutrino dipole portal has received considerable attention [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53], and has persisted as a potential explanation of the MiniBooNE excess [40,54].…”

Section: Introductionmentioning

confidence: 99%

Neutrino Portals, Terrestrial Upscattering, and Atmospheric Neutrinos

Gustafson¹,

Plestid²,

Shoemaker³

2022

Preprint

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We consider the upscattering of atmospheric neutrinos in the interior of the Earth producing heavy neutral leptons (HNLs) which subsequently decay inside large volume detectors (e.g. Super-Kamiokande or DUNE). We compute the flux of upscattered HNLs arriving at a detector, and the resultant event rate of visible decay products. Using Super-Kamiokande's atmospheric neutrino dataset we find new leading constraints for dipole couplings to any flavor with HNL masses between roughly 10 MeV and 100 MeV. For mass mixing with tau neutrinos, we probe new parameter space near HNL masses of ∼ 20 MeV with prospects for substantial future improvements. We also discuss prospects at future experiments such as DUNE, JUNO, and Hyper-Kamiokande.

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Low-energy probes of sterile neutrino transition magnetic moments

Cited by 42 publications

References 61 publications

Consequences of the Dresden-II reactor data for the weak mixing angle and new physics

Consequences of the Dresden-II reactor data for the weak mixing angle and new physics

New Physics searches in a low threshold scintillating argon bubble chamber measuring coherent elastic neutrino-nucleus scattering in reactors

Neutrino Portals, Terrestrial Upscattering, and Atmospheric Neutrinos

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