LONGEVITY AND HIGHEST-ENERGY COSMIC RAYS
1999 ◽
Vol 08
(01)
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pp. 117-122
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It is proposed that the highest energy ~1020 eV cosmic ray primaries are protons which are decay products of a superheavy particle, G. The protons may be decay products either directly of a nearby (galactic) Gor of a long-lived intermediate particle X which arises from decay of a distant (cosmological) G, then decays in or near our Galaxy. Such scenarios can occur in e.g. SU(15) grand unification and in some preon models.
1970 ◽
Vol 39
◽
pp. 168-183
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2004 ◽
Vol 218
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pp. 57-64
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1936 ◽
Vol 156
(889)
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pp. 570-577
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2003 ◽
Vol 122
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pp. 409-412
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1936 ◽
Vol 154
(881)
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pp. 223-245
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