Speaker
Dr
Vivian Poulin
(LUPM, CNRS, France)
Description
In this talk, I will discuss consequences of the potential detection of anti-helium-3 and -4 events by AMS-02. After showing that spallation from primary hydrogen and helium nuclei onto the ISM cannot account for the measured fluxes, I will argue that dark matter annihilation or decay face similar difficulties in explaining these events. I will then entertain the possibility that these events originate from anti-matter-dominated regions in the form of anti-clouds or anti-stars. I will finally discuss constraints due to annihilation onto normal matter that apply on such scenario.
Authors
Dr
Vivian Poulin
(LUPM, CNRS, France)
PIERRE SALATI
(LAPTh & Université de Savoie Mont Blanc)
Marc Kamionkowski
(Johns Hopkins University)
ILIAS CHOLIS
(Johns Hopkins University)
joseph silk
(IAP)
