D meson

D meson
Composition
  • D+
    : cd
  • D
    : dc
  • D0
    : cu
  • D0
    : uc
  • D+
    s
    : cs
  • D
    s
    : sc
StatisticsBosonic
FamilyMesons
InteractionsStrong, weak, electromagnetic, gravitational
SymbolD+
, D
, D0
, D0
, D+
s
, D
s
Antiparticle
  • D+
    : D
  • D0
    : D0
  • D+
    s
    : D
    s
DiscoveredSLAC (1976)
Mass
  • D±
    : 1869.62±0.20 MeV/c2
  • D0
    ,D0
    : 1864.84±0.17 MeV/c2
  • D±
    s
    : 1968.47±0.33 MeV/c2
Mean lifetime
  • D±
    : (1.040±0.007)×10−12 s
  • D0
    ,D0
    : (4.101±0.015)×10−13 s
  • D±
    s
    : (5.00±0.07)×10−13 s
Electric charge
  • D±
    ,D±
    s
    : ±1 e
  • D0
    ,D0
    : 0 e
Spin0 ħ
Strangeness
  • D±
    ,D0
    ,D0
    : 0
  • D±
    s
    : ±1
Charm+1
Isospin
  • D+
    ,D0
    : +1/2
  • D
    ,D0
    : 1/2
  • D±
    s
    : 0
Parity1

The D mesons are the lightest particle that contain charm quarks. They are often studied to gain knowledge on the weak interaction. The strange D mesons (Ds) were called "F mesons" prior to 1986.