Generation 1

Fermion

left-handed

Symbol

Electric charge

Weak isospin

Weak hyper-charge

Color charge

Mass

electron

$e^{-}$

−1

−1/2

−1

1

511 keV

positron

$e^{+}$

+1

0

2

1

511 keV

e-neutrino

${\nu }_e$

0

+1/2

−1

1

<0.22 eV

e-antineutrino

${\overline{\nu }}_e$

0

0

0

1

<0.22 eV

up-quark

$u$

+2/3

+1/2

+1/3

3

2.3 MeV

up-antiquark

$\overline{u}$

−2/3

0

−4/3

$\overline{3}$

2.3 MeV

down-quark

$d$

−1/3

−1/2

+1/3

3

4.8 MeV

down-antiquark

$\overline{d}$

+1/3

0

−2/3

$\overline{3}$

4.8 MeV

Generation 2

muon

${\mu }^{-}$

−1

−1/2

−1

1

105.6 MeV

antimuon

${\mu }^{+}$

+1

0

2

1

105.6 MeV

mu-neutrino

${\nu }_{\mu }$

0

+1/2

−1

1

<0.22 eV

mu-antineutrino

${\overline{\nu }}_{\mu }$

0

0

0

1

<0.22 eV

charm-quark

$c$

+2/3

+1/2

+1/3

3

1275 MeV

charm-antiquark

$\overline{c}$

−2/3

0

−4/3

$\overline{3}$

1275 MeV

strange-quark

$s$

−1/3

−1/2

+1/3

3

95 MeV

strange-antiquark

$\overline{s}$

+1/3

0

−2/3

$\overline{3}$

95 MeV

Generation 3

tau

${\tau }^{-}$

−1

−1/2

−1

1

1776.8 MeV

antitau

${\tau }^{+}$

+1

0

2

1

1776.8 MeV

tau-neutrino

${\nu }_{\tau }$

0

+1/2

−1

1

<0.22 eV

tau-antineutrino

${\overline{\nu }}_{\tau }$

0

0

0

1

<0.22 eV

top-quark

$t$

+2/3

+1/2

+1/3

3

173,210 MeV

top-antiquark

$\overline{t}$

−2/3

0

−4/3

$\overline{3}$

173,210 MeV

bottom-quark

$b$

−1/3

−1/2

+1/3

3

4180 MeV

bottom-antiquark

$\overline{b}$

+1/3

0

−2/3

$\overline{3}$

4180 MeV