English

Reevaluating $H_0$ Tension with Non-Planck CMB and DESI BAO Joint Analysis

Cosmology and Nongalactic Astrophysics 2024-11-22 v1

Abstract

H0H_0 tension in the spatially flat Λ\LambdaCDM model is reevaluated by employing three sets of non-Planck CMB data, namely WMAP, WMAP+ACT, and WMAP+SPT, in conjunction with DESI BAO data and non-DESI BAO datasets including 6dFGS, SDSS DR7, and SDSS DR16. Our analysis yields H0=68.86±0.68 km s1Mpc1H_0 = 68.86\pm 0.68~\mathrm{km\ s^{-1} Mpc^{-1}} with WMAP+DESI BAO, H0=68.72±0.51 km s1Mpc1H_0 = 68.72\pm 0.51~\mathrm{km\ s^{-1} Mpc^{-1}} with WMAP+ACT+DESI BAO, and H0=68.62±0.52 km s1Mpc1H_0 = 68.62\pm 0.52~\mathrm{km\ s^{-1} Mpc^{-1}} with WMAP+SPT+DESI BAO. The results of non-Planck CMB+DESI BAO exhibit a 3.4σ3.4\sigma, 3.7σ3.7\sigma, and 3.8σ3.8\sigma tension with the SH0ES local measurement respectively which are around 1σ1 \sigma lower in significance for the Hubble tension compared to Planck CMB+DESI BAO. Moreover, by combining DESI BAO data+non-Planck CMB measurements, we obtain a more stringent constraint on the Hubble constant compared to non-DESI BAO data+non-Planck CMB data, as well as reducing the significance of the Hubble tension.

Keywords

Cite

@article{arxiv.2411.14189,
  title  = {Reevaluating $H_0$ Tension with Non-Planck CMB and DESI BAO Joint Analysis},
  author = {Ye-Huang Pang and Xue Zhang and Qing-Guo Huang},
  journal= {arXiv preprint arXiv:2411.14189},
  year   = {2024}
}

Comments

5 pages, 1 figure, 2 tables