7–11 Aug 2017
Columbus, Ohio, USA
US/Eastern timezone

SIMPs with Vector Mediators

7 Aug 2017, 14:45
15m
Small Theater (The Athenaeum)

Small Theater

The Athenaeum

Oral Dark matter (direct detection, indirect detection, theory, etc.) Dark matter

Speaker

Alexander Natale (Korea Institute for Advanced Study)

Description

A general mechanism for thermal production of dark matter (DM) via 3-to-2 scatterings, or other higher-order interactions, allows for sub-GeV dark matter and strong self-interactions that meet existing constraints but have the potential to explain mysteries with cold DM and structure formation. In such models, so-called Strongly Interacting Massive Particles (SIMPs), a correct thermal average is important. These SIMP mechanism can exist in models with multiple scalars or in a strongly coupled gauge theory where the Weiss-Zumino-Witten term generates the 3-to-2 interaction. Particularly, a two-scalar model with a residual $Z_5$ discrete symmetry and a model with a dark QCD sector can produce parameter spaces where the SIMP paradigm is realized. In both models, the importance of vector mediators in the SIMP mechanism, and how these vector mediators affect the thermal average, is discussed.

Primary authors

pyungwon ko (Korea Inst. for Advanced Study (KIAS)) Hyun Min Lee (CAU - Chung-Ang University (KR)) Soo-Min Choi (Chung Ang University) Yoo-Jin Kang (Chung Ang University) Alexander Natale (Korea Institute for Advanced Study)

Presentation materials