Lepton

In physica de particulas, un lepton es un particula elementari (Fermion) de spin 1⁄2 non sensibile al interaction forte.

Lista

Properties of leptons
Spin
J
Nomine del
particula o antiparticula
SymboloCarga
Q
(e)[note 1]
Lepton flavor numberMasse
(MeV/c2)
Vita duration
(s)
Le Lμ Lτ
1⁄2Electron[1]e−1+1000.510998910 
(±13)
Stable
Positron[1]e++1−1
Muon[2]μ−10+10105.6583668 
(±38)
2.197019×10−6
(±21)        
Antimuon[2]μ++1−1
Tau[3]τ−100+11776.84 
(±.17)
2.906×10−13
(±.010)         
Antitau[3]τ++1−1
Neutrino electronic[4] 0+100<0.0000022[5]Unknown
Antineutrino electronic −1
Neutrino muonic[4] 00+10< 0.17[5]Unknown
Antineutrino muonic[4] −1
Neutrino tauic[4] 000+1< 15.5[5]Unknown
Antineutrino tauic[4] −1

Masses de neutrinos son non nulle a causa del phenomeno de oscillation de neutrinos, ma illos son multe basse.

Notas e referentias

Notas

Referentias