Ultra-High Energy Cosmic Rays and Stable H-dibaryon

Details Ultra-High Energy Cosmic Rays and Stable H-dibaryon Ultra-High Energy Cosmic Rays and Stable H-dibaryon

1999-05-13

arxiv.org/abs/hep-ph/9905333v2

JETP Lett. 70 (1999) 491-494

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, Latex

Scientific paper

10.1134/1.568202

It is shown that an instanton induced interaction between quarks produces a very deeply bound H-dibaryon with mass below 2M_N, M_H=1718 MeV. Therefore the H-dibaryon is predicted to be a stable particle. The reaction of photodisintegration of H-dibaryon to $2\Lambda$ in during of its penetration into cosmic microwave background will result in a new possible cut-off in the cosmic-ray spectrum. This provides an explanation of ultra-high energy cosmic ray events observed above the GZK cut-off as a result of the strong interaction of high energy H-dibaryons from cosmic rays with nuclei in Earth's atmosphere.

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