Neff S4 targets

7 × 10 −2 ∆Neff 6 × 10−2 5 × 10−2 ∆Neff = 0.071 - TF = TQCD SM minimum CMB-S4 min. 2σ = 0.07 ∆Neff ≈ 0.06 - Thermal ...
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7 × 10

−2

∆Neff

6 × 10−2 5 × 10−2

∆Neff = 0.071 - TF = TQCD SM minimum CMB-S4 min. 2σ = 0.07 ∆Neff ≈ 0.06 - Thermal Gravitino

∆Neff = 0.054 - TF < TR SM minimum spin 1 CMB-S4 2σ = 0.054 ∆Neff = 0.046 - TF < TR SM minimum spin

1 2

4 × 10−2 ∆Neff = 0.034 - SM min. w. one massive scalar

3 × 10−2 ∆Neff = 0.027 - TF < TR SM minimum credit: Daniel Green