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The anomalous results in low-energy experiments have gained more attention in the absence of new physics discoveries at the Large Hadron Collider (LHC). We focus on three such anomalies observed in the LSND, MiniBooNE (MB), and ATOMKI experiments. A 17 MeV pseudoscalar ( \(a'\) ) can explain the LSND and MB excesses very well, and we attempt to incorporate the ATOMKI results within this common framework. Our model includes a two-Higgs doublet with a 17 MeV \(a'\) and three neutral heavy neutrinos ( \(N_i\) , with \(i=1,2,3\) ), where \(N_1\) and \(N_2\) participate in interactions relevant to the LSND and MB excess events.

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The Role of a 17 MeV Pseudoscalar in Resolving LSND, MiniBooNE, and ATOMKI Anomalies

  • 会议论文

  • 发表日期：

    2025年

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  • Samiran Roy,
  • Waleed Abdallah,
  • Raj Gandhi,
  • Tathagata Ghosh,
  • Najimuddin Khan,
  • Subhojit Roy

摘要

The anomalous results in low-energy experiments have gained more attention in the absence of new physics discoveries at the Large Hadron Collider (LHC). We focus on three such anomalies observed in the LSND, MiniBooNE (MB), and ATOMKI experiments. A 17 MeV pseudoscalar ( \(a'\) ) can explain the LSND and MB excesses very well, and we attempt to incorporate the ATOMKI results within this common framework. Our model includes a two-Higgs doublet with a 17 MeV \(a'\) and three neutral heavy neutrinos ( \(N_i\) , with \(i=1,2,3\) ), where \(N_1\) and \(N_2\) participate in interactions relevant to the LSND and MB excess events.