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<p>We study a <i>U</i> (1)<sub><i>B</i>−<i>L</i></sub> extension of the Standard Model (SM) in which Dirac neutrino masses are generated radiatively at the one-loop level through the exchange of new beyond the SM fields. This framework establishes a direct connection between neutrino mass generation and the dark sector, with the stability of the dark matter ensured by a residual discrete <InlineEquation ID="IEq1"> <EquationSource Format="MATHML"><math display="inline"> <msub> <mi mathvariant="script">Z</mi> <mn>6</mn> </msub> </math></EquationSource> <EquationSource Format="TEX">\( {\mathcal{Z}}_6 \)</EquationSource> </InlineEquation> symmetry arising from the spontaneous breaking of <i>U</i> (1)<sub><i>B</i>−<i>L</i></sub>. We investigate the resulting charged lepton flavor violating processes and dark matter phenomenology, saturating relic observations and direct-detection constraints, and analyze the collider signatures of the dark sector at the Large Hadron Collider, its proposed high luminosity extension and at a future muon collider. We have identified excellent prospects for observing the considered dark matter candidates in these colliders, even with lower integrated luminosities than the proposed one.</p>

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Radiative Dirac neutrino masses and dark matter in a U (1)B−L extended model

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月8日

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  • Supriya Senapati,
  • Chayan Majumdar,
  • Utkarsh Patel,
  • Sudhanwa Patra

摘要

We study a U (1)B−L extension of the Standard Model (SM) in which Dirac neutrino masses are generated radiatively at the one-loop level through the exchange of new beyond the SM fields. This framework establishes a direct connection between neutrino mass generation and the dark sector, with the stability of the dark matter ensured by a residual discrete Z 6 \( {\mathcal{Z}}_6 \) symmetry arising from the spontaneous breaking of U (1)B−L. We investigate the resulting charged lepton flavor violating processes and dark matter phenomenology, saturating relic observations and direct-detection constraints, and analyze the collider signatures of the dark sector at the Large Hadron Collider, its proposed high luminosity extension and at a future muon collider. We have identified excellent prospects for observing the considered dark matter candidates in these colliders, even with lower integrated luminosities than the proposed one.