Registry · Definition
IV.D383
tau-effective
formalized
IV.D383 — Neutron Lifetime Input Table (Wave 46)
Complete input table for neutron lifetime precision prediction: g_A at +5.5 ppm (IV.T182), |V_ud| at +16 ppm (IV.T152), Δ_r at +9.5 ppm, f (phase space, <1 ppm), K=4908.7 s (PDG prefactor). All ι_τ-derived except K.
Book IV
Part 8
Ch. 71