Channeling and Directional Features in Direct Dark Matter Detection

          @misc{ pirsa_PIRSA:11120058,
            doi = {10.48660/11120058},
            url = {https://pirsa.org/11120058},
            author = {Bozorgnia, Nassim},
            keywords = {Particle Physics},
            language = {en},
            title = {Channeling and Directional Features in Direct Dark Matter Detection},
            publisher = {Perimeter Institute},
            year = {2011},
            month = {dec},
            note = {PIRSA:11120058 see, \url{https://pirsa.org}}
          }
          

Abstract

The channeling of the ion recoiling after a collision with a WIMP produces a larger ionization/scintillation signal in direct dark matter detection experiments than otherwise expected. I will present estimates of the channeling fractions and their impact on data fits. I will also discuss the possibility of having a daily modulation of the signal due to channeling. Since this modulation depends on the recoil directions and thus on the orientation of the detector with respect to the galaxy, it would be a background free signature. Finally, I will discuss other novel signatures which depend on the direction of recoils and are relevant for directional detectors: a ring of maximum recoil rate around the average arrival direction of WIMPs, aberration features and directional annual modulation amplitudes, in particular the North and South Galactic hemisphere annual modulation.