Probing Dark Matter Self-Interaction in the Sun with IceCube-PINGU
學年 103
學期 1
出版（發表）日期 2014-10-17
作品名稱 Probing Dark Matter Self-Interaction in the Sun with IceCube-PINGU
作品名稱（其他語言）
著者 Chen, Chian-Shu; Lee, Fei-Fan; Lin, Guey-Lin; Lin, Yen-Hsun
單位
出版者
著錄名稱、卷期、頁數 Journal of Cosmology and Astroparticle Physics 1410(2014)10,049
摘要 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+τ-, νbar nu as examples. The PINGU sensitivities to DM self-interaction cross section σχχ are estimated for track and cascade events.
關鍵字 dark matter theory;neutrino detectors
語言 en
ISSN 1475-7516
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
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