128 citations · 555 across the 51 of their papers we have counts for
52 papers
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…
Complex Field Inflation
Ruopeng Zhang, Sibo Zheng
We report first study of complex field inflation. Although understood as a specific two-field inflation, a complex field inflation is able to make more robust model predictions on…
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…