Atmospheric neutrino oscillation analysis with external constraints in Super-Kamiokande I-IV

(Super-Kamiokande Collaboration)

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

An analysis of atmospheric neutrino data from all four run periods of Super-Kamiokande optimized for sensitivity to the neutrino mass hierarchy is presented. Confidence intervals for Δm322, sin2θ23, sin2θ13 and δCP are presented for normal neutrino mass hierarchy and inverted neutrino mass hierarchy hypotheses, based on atmospheric neutrino data alone. Additional constraints from reactor data on θ13 and from published binned T2K data on muon neutrino disappearance and electron neutrino appearance are added to the atmospheric neutrino fit to give enhanced constraints on the above parameters. Over the range of parameters allowed at 90% confidence level, the normal mass hierarchy is favored by between 91.9% and 94.5% based on the combined Super-Kamiokande plus T2K result.

Original languageEnglish
Article number072001
JournalPhysical Review D
Volume97
Issue number7
DOIs
Publication statusPublished - Apr 1 2018

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neutrinos
oscillations
hierarchies
confidence
muons
reactors
intervals
sensitivity
electrons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Atmospheric neutrino oscillation analysis with external constraints in Super-Kamiokande I-IV. / (Super-Kamiokande Collaboration).

In: Physical Review D, Vol. 97, No. 7, 072001, 01.04.2018.

Research output: Contribution to journalArticle

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abstract = "An analysis of atmospheric neutrino data from all four run periods of Super-Kamiokande optimized for sensitivity to the neutrino mass hierarchy is presented. Confidence intervals for Δm322, sin2θ23, sin2θ13 and δCP are presented for normal neutrino mass hierarchy and inverted neutrino mass hierarchy hypotheses, based on atmospheric neutrino data alone. Additional constraints from reactor data on θ13 and from published binned T2K data on muon neutrino disappearance and electron neutrino appearance are added to the atmospheric neutrino fit to give enhanced constraints on the above parameters. Over the range of parameters allowed at 90{\%} confidence level, the normal mass hierarchy is favored by between 91.9{\%} and 94.5{\%} based on the combined Super-Kamiokande plus T2K result.",
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AB - An analysis of atmospheric neutrino data from all four run periods of Super-Kamiokande optimized for sensitivity to the neutrino mass hierarchy is presented. Confidence intervals for Δm322, sin2θ23, sin2θ13 and δCP are presented for normal neutrino mass hierarchy and inverted neutrino mass hierarchy hypotheses, based on atmospheric neutrino data alone. Additional constraints from reactor data on θ13 and from published binned T2K data on muon neutrino disappearance and electron neutrino appearance are added to the atmospheric neutrino fit to give enhanced constraints on the above parameters. Over the range of parameters allowed at 90% confidence level, the normal mass hierarchy is favored by between 91.9% and 94.5% based on the combined Super-Kamiokande plus T2K result.

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