Lepton

A lepton (λεπτο) is also €0.01 in Greek. See: Greek euro coins.

A lepton (Greek for "light", as opposed to hadrons which are "heavy") is a subatomic particle that is not made of quarks.

There are 12 known types of lepton, 3 of which are matter particles (the electron, the muon and the tauon), 3 corresponding neutrinos, and their 6 respective antiparticles. All known charged leptons have a single negative or positive electric charge (depending on whether they are particles or antiparticles) and all of the neutrinos and antineutrinos have neutral electric charge.

Table of contents

1 A table of the leptons
2 See also
3 External links

A table of the leptons

Charged particle / antiparticle Neutrino / antineutrino
Name Symbol Electric charge Mass(GeV) Name Symbol Electric charge Mass(GeV)
Electron / Antielectron (positron) −1 / +1 0.000511 Electron neutrino / Electron antineutrino 0 ~0
Muon / Anti-muon −1 / +1 0.1056 Muon neutrino / Muon antineutrino 0 ~0
Tauon / Anti-tauon −1 / +1 1.777 Tau neutrino / Tau antineutrino 0 ~0

External links

The Particle Data Group who compile authoritative information on particle properties.

Particles in Physics - Elementary particles	Edit
Fermions : Quarks \| Leptons
Gauge Bosons : Photon \| W⁺, W^- and Z⁰ bosons \| Gluons
Not yet observed
Higgs boson \| Graviton
Supersymmetric Partners : Neutralinos \| Charginos \| Gravitino \| Gluinos \| Squarks \| Sleptons