Thermal Real Scalar Triplet Dark Matter
Taisuke Katayose, Shigeki Matsumoto, Satoshi Shirai, Yu Watanabe

TL;DR
This paper thoroughly investigates real scalar triplet dark matter, emphasizing the Sommerfeld effect, and identifies viable parameter regions consistent with current experimental constraints, which upcoming experiments like XENONnT will extensively probe.
Contribution
It provides a comprehensive analysis of scalar triplet dark matter including the Sommerfeld effect and identifies parameter regions still compatible with all current experimental constraints.
Findings
Viable parameter region includes the 'WIMP-Miracle' point.
XENONnT will cover almost the entire viable parameter space.
The Sommerfeld effect significantly impacts dark matter annihilation predictions.
Abstract
Real scalar triplet dark matter, which is known to be an attractive candidate for a thermal WIMP, is comprehensively studied paying particular attention to the Sommerfeld effect on the dark matter annihilation caused by the weak interaction and the other interaction between the dark matter and the Higgs boson. We find a parameter region that includes the so-called 'WIMP-Miracle' one is still surviving, i.e. it respects all constraints imposed by dark matter searches at collider experiments, underground experiments (direct detection) and astrophysical observations (indirect detection). The region is also found to be efficiently searched for by various near future experiments. In particular, the XENONnT experiment will cover almost the entire parameter region.
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