期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP04(2017)116
关键词
Neutrino Physics; Beyond Standard Model
资金
- USA-NSF grant [PHY-1620628]
- EU [H2020-MSCA-ITN-2015-674896, H2020-MSCA-RISE-2015-690575]
- MINECO grant [FPA2013-46570]
- MINECO/FEDER-UE grants [FPA2015-65929-P, FPA2016-78645-P]
- Maria de Maetzu program grant of ICCUB [MDM-2014-0367]
- Severo Ochoa program grant of IFT [SEV-2012-0249]
- Fermilab Graduate Student Research Program in Theoretical Physics
- Villum Foundation [13164]
- Danish National Research Foundation [DNRF91]
- United States Department of Energy [DE-AC02-07CH11359]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1620628] Funding Source: National Science Foundation
- Villum Fonden [00013164] Funding Source: researchfish
In presence of non-standard neutrino interactions the neutrino flavor evolution equation is affected by a degeneracy which leads to the so-called LMA-Dark solution. It requires a solar mixing angle in the second octant and implies an ambiguity in the neutrino mass ordering. Non-oscillation experiments are required to break this degeneracy. We perform a combined analysis of data from oscillation experiments with the neutrino scattering experiments CHARM and NuTeV. We find that the degeneracy can be lifted if the non-standard neutrino interactions take place with down quarks, but it remains for up quarks. However, CHARM and NuTeV constraints apply only if the new interactions take place through mediators not much lighter than the electroweak scale. For light mediators we consider the possibility to resolve the degeneracy by using data from future coherent neutrino-nucleus scattering experiments. We find that, for an experiment using a stoppedpion neutrino source, the LMA-Dark degeneracy will either be resolved, or the presence of new interactions in the neutrino sector will be established with high significance.
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