• Probing pseudo-Dirac neutrino through detection of neutrino-induced muons from gamma ray burst neutrinos

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      https://www.ias.ac.in/article/fulltext/pram/070/01/0051-0060

    • Keywords

       

      Ultra-high energy neutrinos; pseudo-Dirac neutrinos; neutrino oscillation.

    • Abstract

       

      The possibility to verify the pseudo-Dirac nature of neutrinos is investigated here via the detection of ultra-high energy neutrinos from distant cosmological objects like 𝛾-ray bursts (GRBs). The very long baseline and the energy range from ∼TeV to ∼EeV for such neutrinos invoke the likelihood to probe very small pseudo-Dirac splittings. The expected secondary muons from such neutrinos that can be detected by a kilometer scale detector such as ICECUBE is calculated and compared with the same in the case of mass-flavour oscillations and for no oscillation cases. The calculated muon yields indicate that to probe such small pseudo-Dirac splittings one needs to look for a nearby GRB (red shift $z \sim 0:03$ or less) whereas for a distant GRB ($z \sim 1$) the flux will be much depleted and such phenomenon cannot be distinguished. Also calculated are the muon-to-shower ratios.

    • Author Affiliations

       

      Debasish Majumdar1

      1. Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700 064, India
    • Dates

       
  • Pramana – Journal of Physics | News

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