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Title: Status of neutrino oscillations 2018: 3 σ hint for normal mass ordering and improved CP sensitivity

Abstract

We present a new global fit of neutrino oscillation parameters within the simplest three-neutrino picture, including new data which appeared since our previous analysis. In this update we include new long-baseline neutrino data involving the antineutrino channel in T2K, as well as new data in the neutrino channel, data from NOνA, as well as new reactor data, such as the Daya Bay 1230 days electron antineutrino disappearance spectrum data and the 1500 live days prompt spectrum from RENO, as well as new Double Chooz data. We also include atmospheric neutrino data from the IceCube DeepCore and ANTARES neutrino telescopes and from Super-Kamiokande. Finally, we also update our solar oscillation analysis by including the 2055-day day/night spectrum from the fourth phase of the Super-Kamiokande experiment. With the new data we find a preference for the atmospheric angle in the upper octant for both neutrino mass orderings, with maximal mixing allowed at Δχ 2=1.6 (3.2) for normal (inverted) ordering. We also obtain a strong preference for values of the CP phase δ in the range [π, 2π], excluding values close to π/2 at more than 4σ. More remarkably, our global analysis shows a hint in favorof the normal mass ordering over themore » inverted one at more than 3σ. We discuss in detail the status of the mass ordering, CP violation and octant sensitivities, analyzing the interplay among the different neutrino data samples.« less

Authors:
 [1];  [2];  [1]; ORCiD logo [1];  [1]
  1. Univ. de Valencia, Paterna (Italy). AHEP Group, Inst. de Fisica Corpuscular
  2. Univ. of Campinas (UNICAMP), Sao Paulo (Brazil). Inst. de Fisica Gleb Wataghin; Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Center for Neutrino Physics
Publication Date:
Research Org.:
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1454290
Alternate Identifier(s):
OSTI ID: 1546059
Grant/Contract Number:  
SC0009973; SC0013632
Resource Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 782; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS; Neutrino mass and mixing; Neutrino oscillation; Solar and atmospheric neutrinos; Reactor and accelerator neutrinos; Neutrino telescopes

Citation Formats

de Salas, P. F., Forero, D. V., Ternes, C. A., Tórtola, M., and Valle, J. W. F. Status of neutrino oscillations 2018: 3 σ hint for normal mass ordering and improved CP sensitivity. United States: N. p., 2018. Web. doi:10.1016/j.physletb.2018.06.019.
de Salas, P. F., Forero, D. V., Ternes, C. A., Tórtola, M., & Valle, J. W. F. Status of neutrino oscillations 2018: 3 σ hint for normal mass ordering and improved CP sensitivity. United States. doi:10.1016/j.physletb.2018.06.019.
de Salas, P. F., Forero, D. V., Ternes, C. A., Tórtola, M., and Valle, J. W. F. Thu . "Status of neutrino oscillations 2018: 3 σ hint for normal mass ordering and improved CP sensitivity". United States. doi:10.1016/j.physletb.2018.06.019.
@article{osti_1454290,
title = {Status of neutrino oscillations 2018: 3 σ hint for normal mass ordering and improved CP sensitivity},
author = {de Salas, P. F. and Forero, D. V. and Ternes, C. A. and Tórtola, M. and Valle, J. W. F.},
abstractNote = {We present a new global fit of neutrino oscillation parameters within the simplest three-neutrino picture, including new data which appeared since our previous analysis. In this update we include new long-baseline neutrino data involving the antineutrino channel in T2K, as well as new data in the neutrino channel, data from NOνA, as well as new reactor data, such as the Daya Bay 1230 days electron antineutrino disappearance spectrum data and the 1500 live days prompt spectrum from RENO, as well as new Double Chooz data. We also include atmospheric neutrino data from the IceCube DeepCore and ANTARES neutrino telescopes and from Super-Kamiokande. Finally, we also update our solar oscillation analysis by including the 2055-day day/night spectrum from the fourth phase of the Super-Kamiokande experiment. With the new data we find a preference for the atmospheric angle in the upper octant for both neutrino mass orderings, with maximal mixing allowed at Δχ2=1.6 (3.2) for normal (inverted) ordering. We also obtain a strong preference for values of the CP phase δ in the range [π, 2π], excluding values close to π/2 at more than 4σ. More remarkably, our global analysis shows a hint in favorof the normal mass ordering over the inverted one at more than 3σ. We discuss in detail the status of the mass ordering, CP violation and octant sensitivities, analyzing the interplay among the different neutrino data samples.},
doi = {10.1016/j.physletb.2018.06.019},
journal = {Physics Letters. Section B},
number = C,
volume = 782,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.physletb.2018.06.019

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Cited by: 117 works
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