Combined Analysis of Neutrino and Antineutrino Oscillations at T2K

(T2K Collaboration)

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

T2K reports its first results in the search for CP violation in neutrino oscillations using appearance and disappearance channels for neutrino- and antineutrino-mode beams. The data include all runs from January 2010 to May 2016 and comprise 7.482×1020 protons on target in neutrino mode, which yielded in the far detector 32 e-like and 135 μ-like events, and 7.471×1020 protons on target in antineutrino mode, which yielded 4 e-like and 66 μ-like events. Reactor measurements of sin22θ13 have been used as an additional constraint. The one-dimensional confidence interval at 90% for the phase δCP spans the range (-3.13, -0.39) for normal mass ordering. The CP conservation hypothesis (δCP=0, π) is excluded at 90% C.L.

Original languageEnglish
Article number151801
JournalPhysical Review Letters
Volume118
Issue number15
DOIs
Publication statusPublished - 2017 Apr 10
Externally publishedYes

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antineutrinos
neutrinos
oscillations
protons
CP violation
conservation
confidence
reactors
intervals
detectors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Combined Analysis of Neutrino and Antineutrino Oscillations at T2K. / (T2K Collaboration).

In: Physical Review Letters, Vol. 118, No. 15, 151801, 10.04.2017.

Research output: Contribution to journalArticle

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abstract = "T2K reports its first results in the search for CP violation in neutrino oscillations using appearance and disappearance channels for neutrino- and antineutrino-mode beams. The data include all runs from January 2010 to May 2016 and comprise 7.482×1020 protons on target in neutrino mode, which yielded in the far detector 32 e-like and 135 μ-like events, and 7.471×1020 protons on target in antineutrino mode, which yielded 4 e-like and 66 μ-like events. Reactor measurements of sin22θ13 have been used as an additional constraint. The one-dimensional confidence interval at 90{\%} for the phase δCP spans the range (-3.13, -0.39) for normal mass ordering. The CP conservation hypothesis (δCP=0, π) is excluded at 90{\%} C.L.",
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AU - Ban, S.

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AU - Cervera, A.

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AU - Chikuma, N.

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AU - De Rosa, G.

AU - Dealtry, T.

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AB - T2K reports its first results in the search for CP violation in neutrino oscillations using appearance and disappearance channels for neutrino- and antineutrino-mode beams. The data include all runs from January 2010 to May 2016 and comprise 7.482×1020 protons on target in neutrino mode, which yielded in the far detector 32 e-like and 135 μ-like events, and 7.471×1020 protons on target in antineutrino mode, which yielded 4 e-like and 66 μ-like events. Reactor measurements of sin22θ13 have been used as an additional constraint. The one-dimensional confidence interval at 90% for the phase δCP spans the range (-3.13, -0.39) for normal mass ordering. The CP conservation hypothesis (δCP=0, π) is excluded at 90% C.L.

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