128 citations · 555 across the 51 of their papers we have counts for
43 papers · 1 filter
Gravitational freeze-in dark matter from Higgs Preheating
Ruopeng Zhang, Zixuan Xu, Sibo Zheng
Gravitational freeze-in is a mechanism to explain the observed dark matter relic density if dark matter neither couples to inflation nor to standard model sector. In this work, we…
Freeze-in Dark Matter via Lepton Portal: Hubble Tension and Stellar Cooling
Zixuan Xu, Shuai Xu, Ruopeng Zhang +1
We propose a new freeze-in dark matter candidate which feebly couples to the standard model charged leptons. The feeble interactions allow it (i) to freeze-in from the Standard Mod…
Freeze-in dark matter in EDGES 21-cm signal
Shengyu Wu, Shuai Xu, Sibo Zheng
The first measurement on temperature of hydrogen 21-cm signal reported by EDGES strongly favors Coulomb-like interaction between freeze-in dark matter and baryon fluid. We investig…
Resolving Muon g-2 Anomaly With Partial Compositeness
Shuai Xu, Sibo Zheng
We consider the scenario of composite Higgs with partial compositeness to address the muon g-2 anomaly. We show that this anomaly is resolved by one-loop correction due to composit…
Resolving XENON Excess With Decaying Cold Dark Matter
Shuai Xu, Sibo Zheng
We propose a decaying cold dark matter model to explain the excess of electron recoil observed at the XENON1T experiment. In this scenario, the daughter dark matter from the parent…
Identifying Minimal Composite Dark Matter
Shuai Xu, Sibo Zheng
We attempt to identify the minimal composite scalar dark matter from strong dynamics with the characteristic mass of order TeV scale. We provide both direct and indirect limits fro…