Meson production in air showers and the search for light exotic particles

Abstract

Decays of mesons produced in cosmic ray induced air showers in Earth's atmosphere can lead to a flux of light exotic particles which can be detected in underground experiments. We evaluate the energy spectra of the light neutral mesons ${\pi }^0$, $\eta$, ${\rho }^0$, $\omega$, $\varphi$ and $J/\psi$ produced in interactions of cosmic ray protons and helium nuclei with air using QCD inspired event generators. Summing up the mesons produced in the individual hadronic interactions of air showers, we obtain the resulting fluxes of undecayed mesons. As an application, we re-consider the case of millicharged particles created in the electromagnetic decay channels of neutral mesons.

13 pages, 6 pdf figures, ancillary files contain tabulated fluxes of undecayed atmospheric mesons; v2: added clarifications, improved readablility of figures, accepted version

References in corpus (10)

• An Introduction to PYTHIA 8.2
• The Dark Photon
• Turning off the Lights: How Dark is Dark Matter?
• Improved Limits on Millicharged Particles Using the ArgoNeuT Experiment at Fermilab
• New Constraints on Millicharged Particles from Cosmic-ray Production
• Searching in the dark: the hunt for the dark photon
• New constraints on Heavy Neutral Leptons from Super-Kamiokande data
• Dark Cosmic Rays
• Revisiting cosmic ray antinuclei fluxes with a new coalescence model
• Reacceleration of charged dark matter

Cited by in corpus (6)

• Revisiting the Fermionic Dark Matter Absorption on Electron Target
• Searching for light long-lived neutralinos at Super-Kamiokande
• Passage of millicharged particles in the electron beam-dump: refining constraints from SLACmQ and estimating sensitivity of NA64e
• Search for millicharged particles in proton-proton collisions at $\sqrt{s}=13.6$ TeV
• Millicharged Particles from the Heavens: Single- and Multiple-Scattering Signatures
• Atmospheric resonant production for light dark sectors