Impact of CIB decontamination on yg cross-power spectrum. Top: Measured yg cross-power spectrum (in blue) along with the associated uncertainties. The orange (green) curve is the CIB-decontaminated curve using the best-fit (the 2σ upper) value for ϵ_CIB. Bottom: Relative difference between the CIB-decontaminated curves and our raw measured yg cross-power spectrum. On the scales we considered, the effect of the CIB decontamination is 2.0% at most with the best-fit value of ϵ_CIB, and 13.2% at most with the 2σ upper value.