Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with $2.2\times10^{21}$ Protons on Target - INSPIRE

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Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with $2.2\times10^{21}$ Protons on Target

T2K

Collaboration

•

K. Abe
(
- Kamioka Observ.
)

Jul 20, 2018

9 pages

Published in:

Phys.Rev.Lett. 121 (2018) 17, 171802

Published: Oct 24, 2018

e-Print:

1807.07891 [hep-ex]

DOI:

10.1103/PhysRevLett.121.171802

PDG:

\delta

\mathit CP

violating phase

Experiments:

T2K

View in:

reference search295 citations

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Abstract: (APS)

The T2K experiment measures muon neutrino disappearance and electron neutrino appearance in accelerator-produced neutrino and antineutrino beams. With an exposure of 14.7(7.6)×1020 protons on target in the neutrino (antineutrino) mode, 89 νe candidates and seven anti-νe candidates are observed, while 67.5 and 9.0 are expected for δCP=0 and normal mass ordering. The obtained 2σ confidence interval for the CP-violating phase, δCP, does not include the CP-conserving cases (δCP=0, π). The best-fit values of other parameters are sin2θ23=0.526-0.036+0.032 and Δm322=2.463-0.070+0.071×10-3 eV2/c4.

Note:

9 pages, 6 figures

Elementary Particles and Fields
neutrino/mu: secondary beam
CP: violation
antineutrino: oscillation
neutrino: oscillation
neutrino: mixing angle
neutrino: mass difference
antineutrino/mu: secondary beam
KAMIOKANDE
J-PARC Lab

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