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

We study the capture, annihilation and evaporation of dark matter (DM) inside the Sun. It has been shown that the DM self-interaction can increase the DM number inside the Sun. We demonstrate that this enhancement becomes more significant in the regime of small DM mass, given a fixed DM self-interac...

Full description

Saved in:
Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2014-10, Vol.2014 (10), p.49-49
Main Authors: Chen, Chian-Shu, Lee, Fei-Fan, Lin, Guey-Lin, Lin, Yen-Hsun
Format: Article
Language:English
Subjects:
ANNIHILATION
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CAPTURE
CROSS SECTIONS
EVAPORATION
GEV RANGE
NEUTRINOS
NONLUMINOUS MATTER
NUCLEI
PARTICLE TRACKS
SCATTERING
SENSITIVITY
SUN
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We study the capture, annihilation and evaporation of dark matter (DM) inside the Sun. It has been shown that the DM self-interaction can increase the DM number inside the Sun. We demonstrate that this enhancement becomes more significant in the regime of small DM mass, given a fixed DM self-interaction cross section. This leads to the enhancement of neutrino flux from DM annihilation. On the other hand, for DM mass as low as as a few GeVs, not only the DM-nuclei scatterings can cause the DM evaporation, DM self-interaction also provides non-negligible contributions to this effect. Consequently, the critical mass for DM evaporation (typically 3 ∼ 4 GeV without the DM self-interaction) can be slightly increased. We discuss the prospect of detecting DM self-interaction in IceCube-PINGU using the annihilation channels χχ → τ{sup +}τ{sup -}, νν-bar as examples. The PINGU sensitivities to DM self-interaction cross section σ{sub χχ} are estimated for track and cascade events.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2014/10/049