Ultrahigh-energy cosmic rays and stable H dibaryon

  • N. I. Kochelev
Gravity, Astrophysics


It is shown that an instanton-induced interaction between quarks produces a very deeply bound H dibaryon with mass below 2M N , viz., M H =1718 MeV. Therefore the H dibaryon is predicted to be a stable particle. The reaction of photodisintegration of the H dibaryon to 2Λ in the course of its motion in the cosmic microwave background will result in a new possible cutoff in the cosmic-ray spectrum. This provides an explanation for the ultrahigh-energy cosmic ray events observed above the GZK cutoff as being the result of the strong interaction of high-energy H dibaryons from cosmic rays with nuclei in the Earth’s atmosphere.

PACS numbers

14.20.Pt 13.85.Tp 98.70.Sa 98.70.Vc 


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Copyright information

© MAIK "Nauka/Interperiodica" 1999

Authors and Affiliations

  • N. I. Kochelev
    • 1
  1. 1.Bogoliubov Laboratory of Theoretical PhysicsJoint Institute for Nuclear ResearchDubna, Moscow RegionRussia

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