C.l.

English

Alternative forms

• Template:L

Noun

1. Template:Initialism of

   Due to its effect on the expansion rate of the Universe during Big Bang nucleosynthesis (BBN), the theoretical expectations for the primordial abundances of light elements depend on N_ν. Astrophysical measurements of the primordial ⁴He and ²D abundances lead to a value of N_ν = $3.14_{-0.65}^{+0.70}$ at 68% c.l., in very good agreement with the Standard Model expectation.^[1]

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