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.

中文翻译：

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类 DESI 星系巡天双光谱的目录级盲法


我们在固定模板功率谱和双谱分析的背景下评估了 Brieden 等人（2020 年）提出的目录级盲分析技术（盲法）的性能。这种类似于暗能量光谱仪 （DESI） 的星系红移巡天量身定制的盲法有两个组成部分：“AP 盲化”（关于膨胀参数 α_∥、α_⊥）和“RSD 盲化”（红移空间扭曲，影响增长率参数 f）。通过广泛的测试，包括检查立方框中的 RSD 部分、AP 盲法对具有真实巡天天空覆盖的模拟的影响，以及完整的 AP+RSD 盲法管道的实施，我们的分析证明了该技术在分析包括双光谱统计时保持宇宙学参数估计完整性的有效性。我们强调复杂且难以意外揭盲的致盲方法在精确宇宙学中的关键作用。