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  Novel constraints on neutrino physics beyond the standard model from the CONUS experiment

Bonet, H., Bonhomme, A., Buck, C., Fuelber, K., Hakenmueller, J., Heusser, G., et al. (2022). Novel constraints on neutrino physics beyond the standard model from the CONUS experiment. Journal of high energy physics: JHEP, 2022(5): 085. doi:10.1007/JHEP05(2022)085.

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 Creators:
Bonet , H.1, Author
Bonhomme, A.2, Author           
Buck, C.1, Author
Fuelber, K.1, Author
Hakenmueller, J.1, Author
Heusser, G.2, Author           
Hugle, T.1, Author
Lindner, M.2, Author           
Maneschg, W.2, Author           
Rink, T.1, Author
Strecker, H.1, Author
Wink, R.1, Author
Affiliations:
1external, ou_persistent22              
2Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              

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 Abstract: The measurements of coherent elastic neutrino-nucleus scattering (CE nu NS) experiments have opened up the possibility to constrain neutrino physics beyond the standard model of elementary particle physics. Furthermore, by considering neutrino-electron scattering in the keV-energy region, it is possible to set additional limits on new physics processes. Here, we present constraints that are derived from CONUS germanium data on beyond the standard model (BSM) processes like tensor and vector non-standard interactions (NSIs) in the neutrino-quark sector, as well as light vector and scalar mediators. Thanks to the realized low background levels in the CONUS experiment at ionization energies below 1 keV, we are able to set the world's best limits on tensor NSIs from CE nu NS and constrain the scale of corresponding new physics to lie above 360 GeV. For vector NSIs, the derived limits strongly depend on the assumed ionization quenching factor within the detector material, since small quenching factors largely suppress potential signals for both, the expected standard model CE nu NS process and the vector NSIs. Furthermore, competitive limits on scalar and vector mediators are obtained from the CE nu NS channel at reactor-site which allow to probe coupling constants as low as 5 10(-5) of low mediator masses, assuming the currently favored quenching factor regime. The consideration of neutrino-electron scatterings allows to set even stronger constraints for mediator masses below similar to 1 MeV and similar to 10 MeV for scalar and vector mediators, respectively.

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 Dates: 2022-05-13
 Publication Status: Published online
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1007/JHEP05(2022)085
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Title: Journal of high energy physics : JHEP
Source Genre: Journal
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Publ. Info: Bologna, Italy : Società italiana di fisica
Pages: - Volume / Issue: 2022 (5) Sequence Number: 085 Start / End Page: - Identifier: ISSN: 1126-6708
CoNE: https://pure.mpg.de/cone/journals/resource/111021927548002