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Axion Paradigm with Color-Mediated Neutrino Masses

A. Batra1,*, H. B. Câmara1,†, F. R. Joaquim1,‡, R. Srivastava2,§, and J. W. F. Valle3,∥

  • 1Departamento de Física and CFTP, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
  • 2Department of Physics, Indian Institute of Science Education and Research—Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, India
  • 3AHEP Group, Institut de Física Corpuscular—CSIC/Universitat de València, Parc Científic de Paterna. C/ Catedrático José Beltrán, 2 E-46980 Paterna (Valencia), Spain

  • *aditya.batra@tecnico.ulisboa.pt
  • †henrique.b.camara@tecnico.ulisboa.pt
  • ‡filipe.joaquim@tecnico.ulisboa.pt
  • §rahul@iiserb.ac.in
  • ∥valle@ific.uv.es
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Phys. Rev. Lett. 132, 051801 – Published 1 February, 2024

DOI: https://doi.org/10.1103/PhysRevLett.132.051801

Abstract

We propose a generalized Kim-Shifman-Vainshtein-Zakharov–type axion framework in which colored fermions and scalars act as two-loop Majorana neutrino-mass mediators. The global Peccei-Quinn symmetry under which exotic fermions are charged solves the strong CP problem. Within our general proposal, various setups can be distinguished by probing the axion-to-photon coupling at helioscopes and haloscopes. We also comment on axion dark-matter production in the early Universe.

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Phys. Rev. Lett. 132, 051801– Published 1 February, 2024
  • Received 20 September 2023
  • Revised 17 November 2023
  • Accepted 2 January 2024
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