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Search for Electron Antineutrino Appearance in a Long-Baseline Muon Antineutrino Beam

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  • , M. Batkiewicz-Kwasniak
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Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40σ and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions.

langue originaleAnglais
Numéro d'article161802
journalPhysical Review Letters
Volume124
Numéro de publication16
Les DOIs
étatPublié - 24 avr. 2020

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