8 papers
Interpreting the Hubble tension with a cascade decaying dark matter sector
Quan Zhou, Zixuan Xu, Sibo Zheng
Hubble tension can be alleviated by altering either early- or late-time CDM. With only one of these effects introduced, early dark energy remains the only solution capable of r…
Dynamical Dark Energy in light of DESI BAO and Full-Shape Data
Quan Zhou, Sibo Zheng
Recently, the DESI BAO data has reported a preference of dynamical dark energy (DDE) over the \LambdaCDM cosmology. Apart from the BAO data, the DDE model should be also sensitive…
Illuminating sequential freeze-in dark matter with dark photon signal at the CERN SHiP experiment
Xinyue Yin, Sibo Zheng
Single-field freeze-in dark matter barely leaves observable footprints in dark matter direct detection, collider or fixed-target experiments, which can be altered in the two-field…
LHC-friendly freeze-in dark matter via Higgs portal
Xinyue Yin, Shuai Xu, Sibo Zheng
It is known that single-field freeze-in dark matter barely leaves footprints in dark matter direct detection and collider experiments. This situation can be altered in two-field co…
Constraints on freeze-in dark matter from Lyman- forest and 21-cm signal : single-field models
Zixuan Xu, Quan Zhou, Sibo Zheng
We report new Lyman- and 21-cm constraints on freeze-in dark matter (FIDM) which injects energy into the intergalactic medium either through annihilation or decay to photon(s)…
Lyman- limit on axion-like cold dark matter
Zixuan Xu, Sibo Zheng
Using low redshift data on astrophysical reionization, we report new Lyman- limit on axion-like particle (ALP) as cold dark matter in ALP mass range of eV.…