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The hypothesis of an additional light sterile neutrino state introduces four distinct mass spectra depending on the sign of the mass-squared differences. Here, we discuss the implications of these mass spectra on the absolute mass-observables namely—the sum of the light neutrino masses \((\Sigma )\) from cosmology, the effective mass of the electron neutrino from beta decay \((m_{\beta })\) , and the effective Majorana mass \(( m_{\beta \beta })\) from neutrinoless double beta ( \(0\nu \beta \beta \) ) decay.

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Light Sterile Neutrino and Mass Observables

  • 会议论文

  • 发表日期：

    2025年

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  • Debashis Pachhar,
  • Srubabati Goswami,
  • Supriya Pan

摘要

The hypothesis of an additional light sterile neutrino state introduces four distinct mass spectra depending on the sign of the mass-squared differences. Here, we discuss the implications of these mass spectra on the absolute mass-observables namely—the sum of the light neutrino masses \((\Sigma )\) from cosmology, the effective mass of the electron neutrino from beta decay \((m_{\beta })\) , and the effective Majorana mass \(( m_{\beta \beta })\) from neutrinoless double beta ( \(0\nu \beta \beta \) ) decay.