Koide formula [SEP] named after
Koide formula
The Koide formula is an unexplained empirical equation discovered by Yoshio Koide in 1981. In its original form, it relates the masses of the three charged leptons; later authors have extended the relation to neutrinos, quarks, and other families of particles.
Formula.
The Koide formula is
where the masses of the electron, muon, and tau are measured respectively as "m" = , "m" = , and "m" = , and the digits in
model. (Koide’s work was done before the establishment of QCD.)
Katuya and Koide predicted that lifetimes of D and D should be considerably different from what was at that time the conventional anticipation tau(D)= tau(D). Their prediction of these lifetimes was the first in the world prior to the experimental observation.
He published the famous Koide formula in 1982 with a different presentation in 1983.
Originally, Koide's proposed charged lepton mass formula was based on a composite model of quarks and leptons. In a 1990