Parameter

CMB

This work

Comments

DM fraction of total mass, Ω_DM/Ω_m

84% ± 3%

83.2% ± 8%

Computed in Section 3

Effective number of neutrino flavors, N_eff

3.15 ± 0.23

3.04 - 3.12

Computed in Section 3

Sum of neutrino masses, eV/c²

<0.23

0.07

An assumed input in this work

Annihilation factor p_ann

<3*10⁻²⁸

0.0

cm³ sec⁻¹ Gev⁻¹

Helium fractional abundance, Y_p

0.245 ± 0.003

0.245

Computed in Section 4