TY - JOUR
T1 - Catalog-level blinding on the bispectrum for DESI-like galaxy surveys
AU - Novell-Masot, Sergi
AU - Gil-Marin, Hector
AU - Verde, Licia
AU - Aguilar, J.
AU - Ahlen, S.
AU - Brieden, S.
AU - Brooks, D.
AU - Claybaugh, T.
AU - de la Macorra, A.
AU - Forero-Romero, J. E.
AU - Gaztanaga, E.
AU - Gontcho, S. Gontcho A.
AU - Gutierrez, G.
AU - Honscheid, K.
AU - Howlett, C.
AU - Kehoe, R.
AU - Kisner, T.
AU - Lambert, A.
AU - Levi, M. E.
AU - Manera, M.
AU - Meisner, A.
AU - Miquel, R.
AU - Niz, G.
AU - Prada, F.
AU - Rossi, G.
AU - Sanchez, E.
AU - Schubnell, M.
AU - Seo, H.
AU - Sprayberry, D.
AU - Tarle, G.
AU - Weaver, B. A.
PY - 2024/10/25
Y1 - 2024/10/25
N2 - We evaluate the performance of the catalog-level blind analysis technique (blinding) presented in Brieden et al. (2020) in the context of a fixed template power spectrum and bispectrum analysis. This blinding scheme, which is tailored for galaxy redshift surveys similar to the Dark Energy Spectroscopic Instrument (DESI), has two components: the so-called "AP blinding" (concerning the dilation parameters α∥, α⊥) and "RSD blinding" (redshift space distortions, affecting the growth rate parameter f). Through extensive testing, including checks for the RSD part in cubic boxes, the impact of AP blinding on mocks with realistic survey sky coverage, and the implementation of a full AP+RSD blinding pipeline, our analysis demonstrates the effectiveness of the technique in preserving the integrity of cosmological parameter estimation when the analysis includes the bispectrum statistic. We emphasize the critical role of sophisticated — and difficult to accidentally unblind — blinding methods in precision cosmology.
AB - We evaluate the performance of the catalog-level blind analysis technique (blinding) presented in Brieden et al. (2020) in the context of a fixed template power spectrum and bispectrum analysis. This blinding scheme, which is tailored for galaxy redshift surveys similar to the Dark Energy Spectroscopic Instrument (DESI), has two components: the so-called "AP blinding" (concerning the dilation parameters α∥, α⊥) and "RSD blinding" (redshift space distortions, affecting the growth rate parameter f). Through extensive testing, including checks for the RSD part in cubic boxes, the impact of AP blinding on mocks with realistic survey sky coverage, and the implementation of a full AP+RSD blinding pipeline, our analysis demonstrates the effectiveness of the technique in preserving the integrity of cosmological parameter estimation when the analysis includes the bispectrum statistic. We emphasize the critical role of sophisticated — and difficult to accidentally unblind — blinding methods in precision cosmology.
KW - cosmological parameters from LSS
KW - Power spectrum
KW - Redshift surveys
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=webofscienceportsmouth2022&SrcAuth=WosAPI&KeyUT=WOS:001348039900003&DestLinkType=FullRecord&DestApp=WOS_CPL
U2 - 10.1088/1475-7516/2024/10/089
DO - 10.1088/1475-7516/2024/10/089
M3 - Article
SN - 1475-7516
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 10
M1 - 089
ER -