Showing content from http://hyperphysics.phy-astr.gsu.edu/hbase/Forces/../particles/meson.html below:
Table of mesons
Mesons Particle Symbol Anti-
particle Makeup Rest mass
MeV/c2 S C B Lifetime Decay Modes Pion π+ π- ud 139.6 0 0 0 2.60
x10-8 μ+νμ Pion π0 Self 135.0 0 0 0 0.83
x10-16 2γ Kaon K+ K- us 493.7 +1 0 0 1.24
x10-8 μ+νμ, π+π0 Kaon K0s K0s 1* 497.7 +1 0 0 0.89
x10-10 π+π-,2π0 Kaon K0L K0L 1* 497.7 +1 0 0 5.2
x10-8 π+e-νe Eta η0 Self 2* 548.8 0 0 0 <10-18 2γ, 3μ Eta prime η0' Self 2* 958 0 0 0 ... π+π-η Rho ρ+ ρ- ud 770 0 0 0 0.4
x10-23 π+π0 Rho ρ0 Self uu, dd 770 0 0 0 0.4
x10-23 π+π- Omega ω0 Self uu, dd 782 0 0 0 0.8
x10-22 π+π-π0 Phi φ Self ss 1020 0 0 0 20
x10-23 K+K-,K0K0 D D+ D- cd 1869.4 0 +1 0 10.6
x10-13 K + _, e + _ D D0 D0 cu 1864.6 0 +1 0 4.2
x10-13 [K,μ,e] + _ D D+s D-s cs 1969 +1 +1 0 4.7
x10-13 K + _ J/Psi J/ψ Self cc 3096.9 0 0 0 0.8
x10-20 e+e-, μ+μ-... B B- B+ bu 5279 0 0 -1 1.5
x10-12 D0 + _ B B0 B0 db 5279 0 0 -1 1.5
x10-12 D0 + _ Bs Bs0 Bs0 sb 5370 -1 0 -1 ... B-s + _ Upsilon ϒ Self bb 9460.4 0 0 0 1.3
x10-20 e+e-, μ+μ-.. Note that an underline indicates an antiparticle.
Mesons are intermediate mass particles which are made up of a quark-antiquark pair. Three quark combinations are called baryons. Mesons are bosons, while the baryons are fermions.
1* The neutral Kaons K0s and K0L represent symmetric and antisymmetric mixtures of the quark combinations down-antistrange and antidown-strange.
2* The neutral eta meson is considered to be a quark combination
Note: In the table, antiquarks are indicated by an underline, e.g., ud means a combination of an up and an antidown quark.
Most of the listed decay times are in the range 10-13 to 10-8 s which indicates decay by the weak interaction. These decays involve quark transformations which can be represented by Feynman diagrams.
Index
Particle concepts
References
Serway
Ch. 47
Giancoli
Ch. 32
Griffiths
Particle Data Group
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