Particle

Parameter θ

Quantum number

θ/n

Model mass

Experimental mass

Neutrino e

Electron

Up quark

Down quark

Muon

Tau

3

$3\sqrt{2}$

$3+3\sqrt{2}$

$6+\sqrt{2}$

$4-\sqrt{6}/3$

$2+\sqrt{2}$

3

3

4

5

2

2

1

1.414

1.457

1.483

1.592

1.707

0.983 meV

Reference

2.13 MeV

4.81 MeV

105.9 MeV

1781 MeV

< 60 meV

0.511 MeV

2.01 MeV

4.79 MeV

105.7 MeV

1777 MeV