Revisiting the Mass and Scale Dependence of the "Lensing is Low" Effect with DECADE

@misc{queen2026revisiting,
  title = {{Revisiting the Mass and Scale Dependence of the "Lensing is Low" Effect with DECADE}},
  author = {Kimiko Queen and Abigail V. Fisher and Johannes U. Lange},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.23828},
  eprint = {2610.23828},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.23828},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Revisiting the Mass and Scale Dependence of the "Lensing is Low" Effect with DECADE
AU  - Kimiko Queen
AU  - Abigail V. Fisher
AU  - Johannes U. Lange
PY  - 2026
DA  - 2026/10/16
PB  - arXiv
DO  - 10.48550/arxiv.2610.23828
UR  - https://arxiv.org/abs/2610.23828
AB  - Galaxy-galaxy lensing (GGL) is a critical probe of cosmology and galaxy formation. However, predicted GGL amplitudes tend to be ∼ 20−40% higher than observations, primarily on small scales, a tension called the lensing-is-low problem. If not resolved through astrophysics or measurement systematics, this discrepancy may indicate a tension in our cosmological standard model. J. U. Lange et al. (2021), using foreground galaxies from the Baryon Oscillation Spectroscopic Survey (BOSS) and lensing measurements from the Sloan Digital Sky Survey (SDSS), presented evidence that this mismatch extends to large scales where astrophysical explanations are disfavored. We revisit this claim using lensing data from the Dark Energy Camera All Data Everywhere (DECADE) project. Compared to SDSS, the new DECADE measurements reduce the large-scale tension while leaving measurements on small scales mostly unchanged. Ultimately, these new results favor a scale dependence in the lensing-is-low problem.
ER  -