Limits to gauge coupling in the dark sector set by the non-observation of instanton-induced decay of Super-Heavy Dark Matter in the Pierre Auger Observatory data

Abstract

Instantons, which are non-perturbative solutions to Yang-Mills equations, provide a signal for the occurrence of quantum tunneling between distinct classes of vacua. They can give rise to decays of particles otherwise forbidden. Using data collected at the Pierre Auger Observatory, we search for signatures of such instanton-induced processes that would be suggestive of super-heavy particles decaying in the Galactic halo. These particles could have been produced during the post-inflationary epoch and match the relic abundance of dark matter inferred today. The non-observation of the signatures searched for allows us to derive a bound on the reduced coupling constant of gauge interactions in the dark sector: ${\alpha }_X\lesssim 0.09$, for $10^9\lesssim M_X/\mathrm{GeV}<10^{19}$. Conversely, we obtain that, for instance, a reduced coupling constant ${\alpha }_X=0.09$ excludes masses $M_X\gtrsim 3\times 10^{13}$GeV. In the context of dark matter production from gravitational interactions alone, we illustrate how these bounds are complementary to those obtained on the Hubble rate at the end of inflation from the non-observation of tensor modes in the cosmological microwave background.

arXiv comment9 pages, 3 figures, accepted for publication in Phys. Rev. Lett

References in corpus (39)

• The Structure of Cold Dark Matter Halos
• Dark Matter Substructure in Galactic Halos
• The Structure of Dark Matter Haloes in Dwarf Galaxies
• Investigating the near-criticality of the Higgs boson
• A Joint Analysis of BICEP2/Keck Array and Planck Data
• The Pierre Auger Cosmic Ray Observatory
• Largest temperature of the radiation era and its cosmological implications
• Origin and Propagation of Extremely High Energy Cosmic Rays
• Superheavy dark matter
• Production of massive particles during reheating
• Dark matter direct-detection experiments
• The top quark and Higgs boson masses and the stability of the electroweak vacuum
• Ultra-high energy cosmic rays without GZK cutoff
• A review of indirect searches for particle dark matter
• Stability of the Electroweak Vacuum: Gauge Independence and Advanced Precision
• Probing Planckian physics: resonant production of particles during inflation and features in the primordial power spectrum
• Measurement of the cosmic-ray energy spectrum above $2.5\times 10^{18}$ eV using the Pierre Auger Observatory
• Planckian Interacting Massive Particles as Dark Matter
• Matter Creation via Vacuum Fluctuations in the Early Universe and Observed Ultra-High Energy Cosmic Ray Events
• Ultra-High-Energy Cosmic Rays
• The high energy cosmic ray spectrum from relic particle decay
• Gravitational Production of Dark Matter during Reheating
• Theory and Phenomenology of Planckian Interacting Massive Particles as Dark Matter
• Probing the origin of ultra-high-energy cosmic rays with neutrinos in the EeV energy range using the Pierre Auger Observatory
• Superheavy dark matter through Higgs portal operators
• Fragmentation functions in SUSY QCD and UHECR spectra produced in top-down models
• Post-Inflationary Gravitino Production Revisited
• The Case for an EeV Gravitino
• Radiative Production of Non-thermal Dark Matter
• Heavy decaying dark matter and IceCube high energy neutrinos
• Detailed analysis of the decay spectrum of a super-heavy X particle
• The experimental status of direct searches for exotic physics beyond the standard model at the Large Hadron Collider
• Constraints on the variability of quark masses from nuclear binding
• Hunting for super-heavy dark matter with the highest-energy cosmic rays
• A search for photons with energies above $2\times 10^{17}$ eV using hybrid data from the low-energy extensions of the Pierre Auger Observatory
• Irruption of massive particle species during inflation
• Hunting super-heavy dark matter with ultra-high energy photons
• SUSY In The Sky: Observing Ultra-High Energy Cosmic Neutralinos
• UHECR as Decay Products of Heavy Relics? The Lifetime Problem

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