Phi meson

Not to be confused with the Φ⁻⁻, formerly thought to be a pentaquark.

phi meson

Composition	ϕ0: ss
Statistics	Bosonic
Interactions	Strong, Weak
Symbol	ϕ, ϕ0
Antiparticle	Self
Mass	1019.445±0.020 MeV/c2
Electric charge	0

In particle physics, the phi meson is a vector meson formed of a strange quark and a strange antiquark. It has a mass of 1019.445±0.020 MeV/c².

Particle name	Particle symbol	Antiparticle symbol	Quark content	Rest mass (MeV/c2)	IG	JPC	S	C	B'	Mean lifetime (s)	Commonly decays to (>5% of decays)
Phi meson	ϕ(1020)	Self	ss	1,019.445 ± 0.020	0−	1−−	0	0	0	1.55 ± 0.01 × 10−22	K+ + K− or K0 S + K0 L or (ρ + π) / (π+ + π0 + π−)

See also

• Charmonium
• List of mesons
• List of particles
• Quark model