Jul 14, 17 / Leo 27, 01 07:17 UTC
Physics and Astronomy ¶
Leptons Mass:
me = 0.5109989461(31) MeV,
mτ /me = (2π /√3α)[(π2/6) +1]2,
mμ /me = (2π /√3α)[(π2/6) -1]2;
mνe = 0.00249988 eV,
mντ /mνe = (2π /108α)[1+ (π2/24)]2,
mνμ /mνe = (2π /108α)[1- (π2/24)]2.
α = 1/137.035999139(31).