Speaker
Dr
Chian-Shu Chen
(National Center for Theoretical Sciences, Taiwan)
Description
The halo dark matter (DM) can be gravitationally captured by the Sun. For self-interacting DM (SIDM), we show that the number of DM trapped inside the Sun remains unsuppressed even if the DM-nucleon cross section is negligible. We consider a SIDM model where $U(1)$ gauge symmetry is introduced to account for the DM self-interaction. Such a model naturally leads to isospin violation for DM-nucleon interaction, although isospin symmetry is still allowed as a special case.We show that the indirect detection of DM-induced neutrinos from the Sun can probe those SIDM parameter ranges not reachable by direct detections. Those parameter ranges are either the region with a very small $m_{\chi}$ or the region opened up due to isospin violations.
Authors
Dr
Chian-Shu Chen
(National Center for Theoretical Sciences, Taiwan)
Prof.
Guey-Lin Lin
(Institute of Physics, National Chiao Tung University, Hsinchu 30010, Taiwan)
Mr
Yen-Hsun Lin
(Institute of Physics, National Chiao Tung University, Hsinchu 30010, Taiwan)
