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  • Letter
  • Open Access

Testing the nonunitarity of the leptonic mixing matrix at FASERv and FASERv2

Jesús Miguel Celestino-Ramírez1,*, F. J. Escrihuela2,†, L. J. Flores3,‡, and O. G. Miranda1,§

  • 1Departamento de Física, Centro de Investigación y de Estudios Avanzados del IPN, Apartado Postal 14-740 07000 Ciudad de México, México
  • 2AHEP Group, Institut de Física Corpuscular—C.S.I.C./Universitat de València, Parc Cientific de Paterna., C/Catedrático José Beltrán, 2 E-46980 Paterna (València), Spain
  • 3Tecnológico Nacional de México/ITS de Jerez, C.P. 99863 Zacatecas, México

  • *jesus.celestino@cinvestav.mx
  • †franesfe@alumni.uv.es
  • ‡ljflores@jerez.tecnm.mx
  • §omar.miranda@cinvestav.mx
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Phys. Rev. D 109, L011705 – Published 30 January, 2024

DOI: https://doi.org/10.1103/PhysRevD.109.L011705

Abstract

The FASERν experiment has detected the first neutrino events coming from LHC. Near future high-statistic neutrino samples will allow us to search for new physics within the neutrino sector. Motivated by the forthcoming promising FASERν neutrino data, and its successor, FASERν2, we study its potential for testing the unitarity of the neutrino lepton mixing matrix. Although it would be challenging for FASERν and FASERν2 to have strong constraints on this kind of new physics, we discuss its role in contributing to a future improved global analysis.

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Phys. Rev. D 109, L011705– Published 30 January, 2024
  • Received 12 September 2023
  • Accepted 3 January 2024
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