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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/033/06/0639-0649

    • Keywords

       

      Kolar particle; heavy neutrino; fourth generation; standard model; E6 grand unified model; heavy leptons; supersymmetric model; scalar neutrino

    • Abstract

       

      We give plausible interpretations of the unusual events seen in the proton decay detector at Kolar Gold Fields indicating the existence of a massive (≳2GeV) long lived (10−8−10−9s) particle. We show that it is possible to accommodate the particle in the standard model as a fourth generation neutrino, or inE6 grand unified theory as a neutral fermion occurring in27 representation or in supersymmetric theory as a scalar neutrino. However, there is a difficulty in explaining the large production rate for the particle.

    • Author Affiliations

       

      A S Joshipura1 2 G Rajasekaran1 V Gupta3 K V L Sarma3

      1. The Institute of Mathematical Sciences, Madras - 600 013, India
      2. Physical Research Laboratory, Ahmedabad - 380 009, India
      3. Tata Institute of Fundamental Research, Bombay - 400 005, India
    • Dates

       
  • Pramana – Journal of Physics | News

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