8 papers
Comment on "Dark Matter Annihilation Can Produce a Detectable Antihelium Flux through Decays"
M. Kachelriess, S. Ostapchenko, J. Tjemsland
In a recent Letter, it was suggested that a previously neglected Standard Model process, namely, the production of antihelium-3 nuclei through decays of baryons can lead…
Meson production in air showers and the search for light exotic particles
M. Kachelriess, J. Tjemsland
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…
Formation of light (anti)nuclei
J. Tjemsland
The production mechanism of light nuclei, such as deuteron, helium-3, tritium and their antiparticles, has recently attracted an increased attention from the astroparticle and heav…
On nuclear coalescence in small interacting systems
M. Kachelriess, S. Ostapchenko, J. Tjemsland
The formation of light nuclei can be described as the coalescence of clusters of nucleons into nuclei. In the case of small interacting systems, such as dark matter and an…
Reacceleration of charged dark matter
M. Kachelriess, J. Tjemsland
Charged particles scattering on moving inhomogenities of the magnetised interstellar medium can gain energy through the process of second-order Fermi acceleration. This energy gain…
Revisiting cosmic ray antinuclei fluxes with a new coalescence model
M. Kachelriess, S. Ostapchenko, J. Tjemsland
Antideuteron and antihelium nuclei have been proposed as promising detection channels for dark matter because of the low astrophysical backgrounds expected. To estimate both potent…