• Citer

Is astronomy possible with neutral ultrahigh energy cosmic ray particles existing in the standard model?

par Tiniakov, Petr ;Tkachev, Igor
Référence Journal of experimental and theoretical physics, 106, 3, page (481-487)
Publication Publié, 2008-03

Article révisé par les pairs

• Détails
• Contenu

Résumé :

The recently observed correlation between HiRes stereo cosmic ray events with energies E ∼ 1019 eV and BL Lacertae objects occurs at an angle that strongly suggests that the primary particles are neutral. We analyze whether this correlation, if not a statistical fluctuation, can be explained within the Standard Model, i.e., assuming only known particles and interactions. We have not found a plausible process that can account for these correlations. The mechanism that comes closest-the conversion of protons into neutrons in the IR background of our Galaxy-still underproduces the required flux of neutral particles by about two orders of magnitude. The situation is different at E ∼ 1020 eV, where the flux of cosmic rays at the Earth may contain up to a few percent of neutrons, indicating their extragalactic sources. © 2008 Pleiades Publishing, Ltd.