Primordial bound systems of superheavy particles as the source of ultra-high energy cosmic rays

Abstract

Annihilation of superheavy particles in primordial bound systems is considered as the source of Ultra High Energy Cosmic Rays (UHECR).Charge conservation makes them to be produced in pairs, and the estimated separation of particle and antiparticle in such pair is shown to be in some cases much smaller than the average separation determined by the averaged number density of considered particles. If the new U(1) charge is the source of a long range field similar to electromagnetic field, the particle and antiparticle, possessing that charge, can form primordial bound system with annihilation timescale, which can satisfy the conditions, assumed for this type of UHECR sources. These conditions severely constrain the possible properties of considered particles. So, the proposed mechanism of UHECR origin is impossible to realise, if the U(1) charged particles share ordinary weak, strong or electromagnetic interactions. It makes the proposed mechanism of pairing and binding of superheavy U(1) charged particles an effective theoretical tool in the probes of the physics of very early Universe and of the hidden sector of particle theory, underlying it.

12 pages

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• Revisiting ultrahigh-energy constraints on decaying super-heavy dark matter
• Constraining decaying very heavy dark matter from galaxy clusters with 14 year Fermi-LAT data
• Stable quarks of the 4th family?
• Composite Dark Matter and its Charged Constituents
• Exploring multimessenger signals from heavy dark matter decay with EDGES 21-cm result and IceCube
• A testable scenario of WIMPZILLA with Dark Radiation
• Search for heavy dark matter from dwarf spheroidal galaxies: leveraging cascades and subhalo models
• SUSY Resonances from UHE neutralinos in Neutrino Telescopes and in the Sky
• Dark matter from stable charged particles?
• Superheavy dark matter and ultrahigh energy cosmic rays
• Ultra High Energy Cosmic Rays from Sequestered X Bursts
• Gravitational radiation as the bremsstrahlung of superheavy particles in the early Universe
• On the abundance of primordial bound states of superheavy magnetic monopoles