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Title: COHERENT Enlightenment of the Neutrino Dark Side

Abstract

In the presence of nonstandard neutrino interactions (NSI), oscillation data are affected by a degeneracy which allows the solar mixing angle to be in the second octant (also known as the dark side) and implies a sign flip of the atmospheric mass-squared difference. This leads to an ambiguity in the determination of the ordering of neutrino masses, one of the main goals of the current and future experimental neutrino program. We show that the recent observation of coherent neutrino-nucleus scattering by the COHERENT experiment, in combination with global oscillation data, excludes the NSI degeneracy at the 3.1σ (3.6σ) C.L. for NSI with up (down) quarks.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Fermilab
  2. YITP, Stony Brook
  3. Madrid, IFT
  4. KIT, Karlsruhe, IKP
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:
1469015
Report Number(s):
FERMILAB-PUB-17-308-T; YITP-SB-17-28; IFT-UAM-CSIC-17-073; arXiv:1708.02899
1615211
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Phys.Rev.
Additional Journal Information:
Journal Volume: D96; Journal Issue: 11
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Coloma, Pilar, Gonzalez-Garcia, M. C., Maltoni, Michele, and Schwetz, Thomas. COHERENT Enlightenment of the Neutrino Dark Side. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.96.115007.
Coloma, Pilar, Gonzalez-Garcia, M. C., Maltoni, Michele, & Schwetz, Thomas. COHERENT Enlightenment of the Neutrino Dark Side. United States. doi:10.1103/PhysRevD.96.115007.
Coloma, Pilar, Gonzalez-Garcia, M. C., Maltoni, Michele, and Schwetz, Thomas. Mon . "COHERENT Enlightenment of the Neutrino Dark Side". United States. doi:10.1103/PhysRevD.96.115007. https://www.osti.gov/servlets/purl/1469015.
@article{osti_1469015,
title = {COHERENT Enlightenment of the Neutrino Dark Side},
author = {Coloma, Pilar and Gonzalez-Garcia, M. C. and Maltoni, Michele and Schwetz, Thomas},
abstractNote = {In the presence of nonstandard neutrino interactions (NSI), oscillation data are affected by a degeneracy which allows the solar mixing angle to be in the second octant (also known as the dark side) and implies a sign flip of the atmospheric mass-squared difference. This leads to an ambiguity in the determination of the ordering of neutrino masses, one of the main goals of the current and future experimental neutrino program. We show that the recent observation of coherent neutrino-nucleus scattering by the COHERENT experiment, in combination with global oscillation data, excludes the NSI degeneracy at the 3.1σ (3.6σ) C.L. for NSI with up (down) quarks.},
doi = {10.1103/PhysRevD.96.115007},
journal = {Phys.Rev.},
number = 11,
volume = D96,
place = {United States},
year = {2017},
month = {12}
}

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