Resolving the LMA-dark NSI degeneracy with coherent neutrino-nucleus scattering
Mariano Chaves and Thomas Schwetz
ARTIGO
Inglês
Agradecimentos: We thank the authors of ref. [33] for providing ?2 -tables from their updated global oscillation analysis. This project has received support from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 860881-HIDDeN....
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Agradecimentos: We thank the authors of ref. [33] for providing ?2 -tables from their updated global oscillation analysis. This project has received support from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 860881-HIDDeN. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001. MEC is grateful for the 140564/2018-7 funding from CNPQ
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Abstract: In the presence of non-standard neutrino interactions (NSI), a degeneracy exists in neutrino oscillation data, which involves the flipping of the octant of the mixing angle theta (12) and the type of the neutrino mass ordering. In this article, we revisit the status of this degeneracy in...
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Abstract: In the presence of non-standard neutrino interactions (NSI), a degeneracy exists in neutrino oscillation data, which involves the flipping of the octant of the mixing angle theta (12) and the type of the neutrino mass ordering. In this article, we revisit the status of this degeneracy in the light of recent data on coherent elastic neutrino-nucleus scattering (CE nu NS) from the COHERENT experiment. For general relative couplings to up and down quarks, the degeneracy is disfavoured at the 2 sigma level by the latest data but remains at a higher confidence level. We investigate the requirements of future CE nu NS measurements to resolve the degeneracy with high significance. We find that a measurement involving both, electron and muon neutrino flavours and a target with a neutron-to-proton ratio close to 1 is required. For example, an experiment with a silicon target at the European Spallation Source can resolve the degeneracy at more than 4 sigma for arbitrary relative couplings to up and down quarks
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COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES
001
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
140564/2018-7
Aberto
Resolving the LMA-dark NSI degeneracy with coherent neutrino-nucleus scattering
Mariano Chaves and Thomas Schwetz
Resolving the LMA-dark NSI degeneracy with coherent neutrino-nucleus scattering
Mariano Chaves and Thomas Schwetz
Fontes
Journal of high energy physics (Fonte avulsa) |