Cosmology from CMB lensing and delensed E E power spectra using 2019–2020 SPT-3G polarization data

From CMB polarization data alone, we reconstruct the CMB lensing power spectrum, comparable in overall constraining power to previous temperature-based reconstructions, and an unlensed $E$-mode power spectrum, with clear detections of the third through the tenth acoustic peaks. The observations, taken in 2019 and 2020 with the South Pole Telescope (SPT) and the SPT-3G camera, cover $1500\text{ }\text{ }{\mathrm{deg}}^{2}$ at 95, 150, and 220 GHz with arcminute resolution and roughly $4.9\text{ }\text{ }\mathrm{\ensuremath{\mu}}\mathrm{K}\text{\ensuremath{-}}\mathrm{arcmin}$ coadded noise in polarization. The power spectrum estimates, together with systematic parameter estimates and a joint covariance matrix,…

• NS
  National Science Foundation

  Awards: OPP-1852617, OPP-2332483
• UD
  U.S. Department of Energy

  Award: DE-AC02-05CH11231
• UO
  University of California
• NE
  National Energy Research Scientific Computing Center
• CN
  Centre National d’Etudes Spatiales
• OO
  Office of Science
• H2
  Horizon 2020 Framework Programme

  Award: 101001897
• KI
  Kavli Institute for Cosmological Physics, University of Chicago
• ER
  European Research Council
• AR
  Australian Research Council

  Award: DP210102386
• HE
  High Energy Physics

  Awards: DE-AC02-06CH11357, DE-AC02-76SF00515