Probing dark matter self-interaction in the Sun with IceCube-PINGU

Chian Shu Chen, Guey-Lin Lin, Yen Hsun Lin

Research output: Contribution to conferencePaperpeer-review


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 yet reachable by direct detections. Those parameter ranges are either the region with a very small dark matter mass (less than a few GeV) or the region opened up due to isospin violations.

Original languageEnglish
StatePublished - May 2015
Event13th Flavor Physics and CP Violation, FPCP 2015 - Nagoya, Japan
Duration: 25 May 201529 May 2015


Conference13th Flavor Physics and CP Violation, FPCP 2015


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