5 papers
Probing Cosmic-Ray-Boosted and Supernova-Sourced Sub-GeV Dark Matter with Paleo-Detectors
Xiaoyong Chu, Yue-Lin Sming Tsai, Mei-Wen Yang
Astrophysical dark matter particles with masses well below GeV-scale can be difficult to detect using conventional nuclear recoil experiments due to their low velocities in our Mil…
From SIMP miracles to WIMP dead ends: navigating the freeze out of MeV-mass dark matter
Xiaoyong Chu, Josef Pradler
We summarize here our studies \cite{Chu:2022xuh,Chu:2023jyb,Chu:2024rrv} on two distinct scenarios for MeV-mass thermal dark matter freeze-out. First, we determine the minimal viab…
Even SIMP miracles are possible
Xiaoyong Chu, Marco Nikolic, Josef Pradler
Strongly interacting massive particles have been advocated as prominent dark matter candidates when they regulate their relic abundance through odd-numbered annih…
Dark matter bound-state formation in the Sun
Xiaoyong Chu, Raghuveer Garani, Camilo GarcÃa-Cely +1
The Sun may capture asymmetric dark matter (DM), which can subsequently form bound-states through the radiative emission of a sub-GeV scalar. This process enables generation of sca…
On the minimal mass of thermal dark matter and the viability of millicharged particles affecting 21cm cosmology
Xiaoyong Chu, Josef Pradler
Thermal freeze-out offers an attractive explanation of the dark matter density free from fine-tuning of initial conditions. For dark matter with a mass below tens of MeV, photons,…