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Phi meson information


Phi meson
Feynman diagram of the most common
ϕ
meson decay
Composition
ϕ0
:
s

s
StatisticsBosonic
FamilyMesons
InteractionsStrong, Weak, Gravity, Electromagnetism
Symbol
ϕ
,
ϕ0
AntiparticleSelf
TheorizedJ. J. Sakurai (1962)
DiscoveredP.L. Connolly et al. (1962)
Types1
Mass1019.461±0.020 MeV/c2
Mean lifetime(1.55±0.01)×10−22 s
Decays into

  • K+
    +
    K

  • K0
    S
    +
    K0
    L

  • ρ
    +
    π

  • π+
    +
    π0
    +
    π
Electric charge0
Spin1
Isospin0
Hypercharge0
Parity−1
C parity−1

In particle physics, the phi meson or
ϕ
meson
is a vector meson formed of a strange quark and a strange antiquark. It was the
ϕ
meson's unusual propensity to decay into
K0
and
K0
that led to the discovery of the OZI rule. It has a mass of 1019.461±0.020 MeV/c2 and a mean lifetime of 1.55±0.01 × 10−22s.

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