12 citations · 25 across the 11 of their papers we have counts for
11 papers
21-cm Constraints on S-wave Dark Matter Annihilation with Subhalo-enhanced Effects
Zixuan Xu, Sibo Zheng
Observations of the 21-cm signal can probe energy injection into the intergalactic medium arising from dark matter annihilation during cosmic dawn and reionization. For s-wave anni…
Revisiting the Hubble tension with an inverse power-law early dark energy
Quan Zhou, Sibo Zheng
We propose a new early dark energy with a potential that has an inverse power-law asymptotic tail to alleviate the Hubble tension. Fitting this model to the datasets of CMB+BAO+SN+…
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…
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 re…
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…
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. C…
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) o…
Gravitational Wave Probe of Gravitational Dark Matter from Preheating
Ruopeng Zhang, Sibo Zheng
We forecast high-frequency gravitational wave (GW) from preheating hosting gravitational dark matter (GDM) as the indirect probe of such GDM. We use proper lattice simulations to h…
Gravitational Dark Matter from Minimal Preheating
Ruopeng Zhang, Sibo Zheng
Following our previous work, we continue to explore gravitational dark matter production during the minimal preheating caused by inflaton self-resonance. In this situation there is…
Self-interacting dark matter to freeze-in via vector portal
Xinyue Yin, Shuai Xu, Sibo Zheng
It is challenging to resolve the small-scale problem for dark matter being a weakly-interacting massive particle. We attempt to address this issue by proposing a self-interacting f…