D meson

D meson
Composition

  • D+
    :
    c

    d

  • D−
    :
    d

    c

  • D0
    :
    c

    u

  • D0
    :
    u

    c

  • D+
    s    :
    c

    s

  • D−
    s    :
    s

    c
StatisticsBosonic
FamilyMesons
InteractionsStrong, weak, electromagnetic, gravitational
Symbol
D+
,
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

  • D0
    ,
    D0
    : (4.101±0.015)×10−13

  • D±
    s    : (5.00±0.07)×10−13
Electric charge

  • D±
    ,
    D±
    s    : ±1 e

  • D0
    ,
    D0
    : 0 e
Spin0
Strangeness

  • D±
    ,
    D0
    ,
    D0
    : 0

  • D±
    s    : ±1
Charm+1
Isospin

  • D+
    ,
    D0
    : +⁠1/2⁠

  • D−
    ,
    D0
    : −⁠1/2⁠

  • D±
    s    : 0
Parity−1

The D mesons are the lightest particle containing charm quarks. They are often studied to gain knowledge on the weak interaction.[1] The strange D mesons (Ds) were called "F mesons" prior to 1986.[2]

  1. ^ Nave, G., ed. (2016). "D meson". Department of Physics & Astronomy. HyperPhysics. Atlanta, GA: Georgia State University.
  2. ^ Wohl, C.G. (1984). "Review of Particle Physics" (PDF). Reviews of Modern Physics. 56 (2, Part II). Particle Data Group. doi:10.1103/RevModPhys.56.S1.