Phi meson

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

phi meson

Composition	ϕ0 : s s
Statistics	Bosonic
Family	Meson
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.

Overview

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	s s	1,019.445 ± 0.020	0−	1−−	0	0	0	1.55 ± 0.01 × 10−22[f]	K+ + K− or K0 S + K0 L or ( ρ + π ) / ( π+ + π0 + π− )

See also

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