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The subdominant new physics scenarios, such as non-standard interactions (NSI), are of significant interest for investigating physics beyond the standard model (BSM) in today’s precision age of neutrino physics. One particularly intriguing area of study involves Scalar NSI (SNSI), which is mediated by a scalar field. Through the Yukawa couplings, SNSI alters the standard neutrino mass matrix and manifests as an extra mass matrix contribution. This study focuses on the effects of complex off-diagonal SNSI parameters, defined by their magnitudes \(|\eta _{\alpha \beta }|\) and associated phases \(\phi _{\alpha \beta }\) . Our analysis highlights the role of \(\eta _{\mu \tau }\) in the determinations of oscillation parameters.

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Exploring New Physics with Scalar NSI at the DUNE and P2SO Experiments

  • 会议论文

  • 发表日期：

    2025年

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  • Sambit Kumar Pusty,
  • Rudra Majhi,
  • Dinesh Kumar Singha,
  • Monojit Ghosh,
  • Rukmani Mohanta

摘要

The subdominant new physics scenarios, such as non-standard interactions (NSI), are of significant interest for investigating physics beyond the standard model (BSM) in today’s precision age of neutrino physics. One particularly intriguing area of study involves Scalar NSI (SNSI), which is mediated by a scalar field. Through the Yukawa couplings, SNSI alters the standard neutrino mass matrix and manifests as an extra mass matrix contribution. This study focuses on the effects of complex off-diagonal SNSI parameters, defined by their magnitudes \(|\eta _{\alpha \beta }|\) and associated phases \(\phi _{\alpha \beta }\) . Our analysis highlights the role of \(\eta _{\mu \tau }\) in the determinations of oscillation parameters.