  Threshold-state elementary particle lifetimes exhibit a scaling in powers of
alpha = e^2/hslash*c, and a reciprocal electron-based 1/alpha scaling in
particle masses that extends over two powers of 1/alpha. The m(e)/alpha
coupling generates accurate q = (u,d), s, c, b quark masses for particles up to
11 GeV. The m(e)/alpha^2 coupling creates the "alpha-quarks" q^alpha = q/alpha
that reproduce the top quark mass and average W^+-, Z^0 doublet mass. The
calculated Bc mass is 6303.3 MeV/c^2, and the lattice QCD value is 6304 +- 12
MeV/c^2. The calculated and experimental top quark masses are m(t)calc =
18*m(e)/alpha^2 = 172.73 GeV/c^2 and m(t)exp = 172.5 +- 2.3 GeV/c^2.
