A balance for dark-matter bound states.

Nozzoli F.
  Venerdì 15/09   09:00 - 12:00   Aula A203   III - Astrofisica
Massive particles with self-interactions of $\sim 0.2$ b/GeV are intriguing dark-matter candidates from an astrophysical point of view. Current/past dark-matter detection experiments are focusing on relatively low cross-sections and cannot rule out very large cross-sections, $\sigma/M>0.01$ b/GeV, due to (atmosphere/housing/soil) shielding. The existence of bound states of dark matter with ordinary matter ($\Delta_{E}>1$ meV) would offer the possibility to test in laboratory capture cross-sections of the order of barn. The signature of mass increasing of cryogenic samples, due to the particle accumulation, would allow investigation of these dark-matter candidates with mass up to GUT scale.