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

Lista 

{| class="wikitable" style="text-align:center"
|+Properties of leptons
|-
!colspan=9|
|-
!rowspan=2| Spin
!rowspan=2| Nomine del particula o antiparticula
!rowspan=2| Symbolo
!rowspan=2| Carga <small>(e)
!colspan=3| Lepton flavor number
!rowspan=2| Masse(MeV/c2)
!rowspan=2| Vita duration(s)
|-
! 
! 
! 

|-
!colspan=9|
|-
|rowspan=13| 1⁄2
|style="text-align:left"| Electron
| e−
| −1
| +1
|rowspan=2| 0
|rowspan=2| 0
|rowspan=2 style="text-align:right"| 0.510998910 (±13)
|rowspan=2| Stable

|-
|style="text-align:left"| Positron
| e+
| +1
| −1
|-

|style="text-align:left"| Muon
| μ−
| −1
|rowspan=2| 0
| +1
|rowspan=2| 0
|rowspan=2 style="text-align:right"| 105.6583668 (±38)
|rowspan=2 style="text-align:right"| 2.197019×10−6(±21)        

|-

|style="text-align:left"|Antimuon
| μ+
| +1
| −1
|-
|style="text-align:left"| Tau
| τ−
| −1
|rowspan=2| 0
|rowspan=2| 0
| +1
|rowspan=2 style="text-align:right"| 1776.84 (±.17)
|rowspan=2 style="text-align:right"| 2.906×10−13(±.010)         

|-
|style="text-align:left"| Antitau
| τ+
| +1
| −1
|-
!colspan=8|
|-

|style="text-align:left"| Neutrino electronic
|  
|rowspan=2| 0
| +1
|rowspan=2| 0
|rowspan=2| 0
|rowspan=2 style="text-align:left"| <0.0000022
|rowspan=2| Unknown

|-

|style="text-align:left"| Antineutrino electronic
|  
| −1
|-
|style="text-align:left"| Neutrino muonic
|  
|rowspan=2| 0
|rowspan=2| 0
| +1
|rowspan=2| 0
|rowspan=2 style="text-align:left"| < 0.17
|rowspan=2| Unknown

|-
|style="text-align:left"| Antineutrino muonic
|  
| −1
|-

|style="text-align:left"| Neutrino tauic
| 
|rowspan=2| 0
|rowspan=2| 0
|rowspan=2| 0
| +1
|rowspan=2 style="text-align:left"| < 15.5
|rowspan=2| Unknown

|-
|style="text-align:left"| Antineutrino tauic
|  
| −1
|-
!colspan=9|
|-
|}

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

Notas e referentias

Notas

Referentias

Physica de particulas