Constraints on primordial non-Gaussianity from the cross-correlation of DESI luminous red galaxies and Planck CMB lensing

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Volume 698 (June 2025)

A&A, 698 (2025) A177

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Table 2.

Median likelihood f_NL values with 68% confidence intervals obtained from the application of our analysis pipeline to contaminated and mitigated Gaussian mocks with f_NL = −50, 0, and 50.

	C_ℓ^κG	C_ℓ^GG	C_ℓ^κG + C_ℓ^GG	C_ℓ^κG + C_ℓ^GG
Scale cut	ℓ_min = 2	ℓ_min = 7	ℓ_min = 2, 7	ℓ_min = 2, 32

$f_{NL}^{true} = - 50$ $f_{\mathrm{NL}}^{\mathrm{true}} = -50$	$- 48_{- 31}^{+ 34}$ $-48^{+34}_{-31}$	$- 34_{- 27}^{+ 22}$ $-34_{-27}^{+22}$	$- 30_{- 21}^{+ 19}$ $-30_{-21}^{+19}$	−30 ± 27
$f_{NL}^{true} = 0$ $f_{\mathrm{NL}}^{\mathrm{true}} = 0$	$- 17_{- 35}^{+ 37}$ $-17^{+37}_{-35}$	$- 4_{- 23}^{+ 24}$ $-4^{+24}_{-23}$	$- 1_{- 18}^{+ 17}$ $-1^{+17}_{-18}$	$- 3_{- 28}^{+ 30}$ $-3_{-28}^{+30}$
$f_{NL}^{true} = 50$ $f_{\mathrm{NL}}^{\mathrm{true}} = 50$	21 ± 32	48 $_{- 19}^{+ 17}$ $^{+17}_{-19}$	46 $_{- 16}^{+ 15}$ $^{+15}_{-16}$	37 ± 28

Notes. The constraints from C_ℓ^GG used a scale cut at ℓ_min = 7 to have a better control of systematics, while the constraints from C_ℓ^κG were obtained using all the multipoles up to ℓ_max = 300. The joint constraints also include a case in which the scale cut for C_ℓ^GG was set to ℓ_min = 32 in order to constrain only the galaxy bias but not f_NL.

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