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Title: Curtailing the dark side in non-standard neutrino interactions

Abstract

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. Here we find that, for an experiment using a stopped-pion 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.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3]; ORCiD logo [4]; ORCiD logo [5]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Copenhagen, Copenhagen (Denmark)
  3. Univ. de Barcelona, Barcelona (Spain); Institucio Catalana de Recerca i Estudis Avancats (ICREA), Barcelona (Spain); Stony Brook Univ., Stony Brook, NY (United States)
  4. Univ. of Autonoma de Madrid, Madrid (Spain)
  5. Karlsruher Institut fur Technologie (KIT), Karlsruhe (Germany)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1345608
Report Number(s):
FERMILAB-PUB-17-016-T; YITP-SB-17-4; IFT-UAM-CSIC-17-004; arXiv:1701.04828
Journal ID: ISSN 1029-8479; 1509503
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 4; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; neutrino physics; Beyond Standard Model

Citation Formats

Coloma, Pilar, Denton, Peter B., Gonzalez-Garcia, Maria C., Maltoni, Michele, and Schwetz, Thomas. Curtailing the dark side in non-standard neutrino interactions. United States: N. p., 2017. Web. doi:10.1007/JHEP04(2017)116.
Coloma, Pilar, Denton, Peter B., Gonzalez-Garcia, Maria C., Maltoni, Michele, & Schwetz, Thomas. Curtailing the dark side in non-standard neutrino interactions. United States. doi:10.1007/JHEP04(2017)116.
Coloma, Pilar, Denton, Peter B., Gonzalez-Garcia, Maria C., Maltoni, Michele, and Schwetz, Thomas. Thu . "Curtailing the dark side in non-standard neutrino interactions". United States. doi:10.1007/JHEP04(2017)116. https://www.osti.gov/servlets/purl/1345608.
@article{osti_1345608,
title = {Curtailing the dark side in non-standard neutrino interactions},
author = {Coloma, Pilar and Denton, Peter B. and Gonzalez-Garcia, Maria C. and Maltoni, Michele and Schwetz, Thomas},
abstractNote = {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. Here we find that, for an experiment using a stopped-pion 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.},
doi = {10.1007/JHEP04(2017)116},
journal = {Journal of High Energy Physics (Online)},
number = 4,
volume = 2017,
place = {United States},
year = {2017},
month = {4}
}

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