Updated T2K measurements of muon neutrino and antineutrino disappearance using <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>3.6</mml:mn><mml:mo>×</mml:mo><mml:mrow><mml:msup><mml:mrow><mml:mn>10</mml:mn></mml:mrow><mml:mrow><mml:mn>21</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:mrow></mml:math> protons on target



Abe, K, Akhlaq, N, Akutsu, R, Ali, A, Alonso Monsalve, S, Alt, C, Andreopoulos, C, Antonova, M, Aoki, S, Arihara, T
et al (show 391 more authors) (2023) Updated T2K measurements of muon neutrino and antineutrino disappearance using <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>3.6</mml:mn><mml:mo>×</mml:mo><mml:mrow><mml:msup><mml:mrow><mml:mn>10</mml:mn></mml:mrow><mml:mrow><mml:mn>21</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:mrow></mml:math> protons on target. Physical Review D, 108 (7). 072011-.

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Abstract

Muon neutrino and antineutrino disappearance probabilities are identical in the standard three-flavor neutrino oscillation framework, but CPT violation and nonstandard interactions can violate this symmetry. In this work we report the measurements of sin2θ23 and Δm322 independently for neutrinos and antineutrinos. The aforementioned symmetry violation would manifest as an inconsistency in the neutrino and antineutrino oscillation parameters. The analysis discussed here uses a total of 1.97×1021 and 1.63×1021 protons on target taken with a neutrino and antineutrino beam respectively, and benefits from improved flux and cross section models, new near-detector samples and more than double the data reducing the overall uncertainty of the result. No significant deviation is observed, consistent with the standard neutrino oscillation picture.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 11 Dec 2023 09:12
Last Modified: 21 Jun 2024 11:58
DOI: 10.1103/physrevd.108.072011
Open Access URL: https://journals.aps.org/prd/abstract/10.1103/Phys...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3177243