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SUMMARY:A 1.6 % CMB independent constraint on H0 - Matias Zaldarriaga
DTSTART:20200624T150000Z
DTEND:20200624T160000Z
UID:TALK142543@talks.cam.ac.uk
CONTACT:David Stefanyszyn
DESCRIPTION:I will present cosmological constraints from a joint analysis 
 of the pre- and post-reconstruction galaxy power spectrum multipoles from 
 the final data release of the Baryon Oscillation Spectroscopic Survey (BOS
 S) using the EFT of LSS.\nGeometric constraints are obtained from the posi
 tions of BAO peaks in reconstructed spectra\, which are analyzed in combin
 ation with the unreconstructed spectra in a full-shape (FS) likelihood usi
 ng a joint covariance matrix.  Assuming ΛCDM with massive neutrinos\, we 
 analyze clustering data from two redshift bins zeff=0.38\,0.61 and obtain 
 1.6% constraints on the Hubble constant H0\, using only a single prior on 
 the current baryon density ωb from Big Bang Nucleosynthesis (BBN) and no 
 knowledge of the power spectrum slope ns. This gives H0 = 68.6±1.1 km s
 −1Mpc−1\, with the inclusion of BAO data sharpening the measurement by
  40%\, representing one of the strongest current constraints on H0 indepen
 dent of cosmic microwave background data. Restricting to the best-fit slop
 e ns from Planck (but without additional priors on the spectral shape)\, w
 e obtain a 1% H0 measurement of 67.8± 0.7 km s−1Mpc−1. I will present
  the constraints on Early Dark Energy models that result from the combinat
 ion of Planck and our BOSS analysis. 
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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