Mesons

ParticleSymbolAnti-
particle
MakeupRest mass
MeV/c^2
SCBLifetime
Decay Modes
Pion
ud
139.6
0
0
0
2.60x10-8
Pion
Self
135.0
0
0
0
0.83x10-16
Kaon
us
493.7
+1
0
0
1.24x10-8
Kaon
1*
497.7
+1
0
0
0.89x10-10
Kaon
1*
497.7
+1
0
0
5.2x10-8
Eta
h0
Self
2*
548.8
0
0
0
<10-18
Eta prime
h0'
Self
2*
958
0
0
0
...
...
Rho
r+
r-
ud
770
0
0
0
0.4 x10-23
Rho
r0
Self
uu, dd
770
0
0
0
...
...
Omega
w0
Self
uu, dd
782
0
0
0
...
...
Phi
f
Self
ss
1020
0
0
0
20 x10-23
D
cd
1869.4
0
+1
0
10.6x10-13
D
cu
1864.6
0
+1
0
4.2x10-13
D
cs
1969
+1
+1
0
4.7x10-13
J/Psi
Self
cc
3096.9
0
0
0
0.8x10-20
...
B
bu
5279
0
0
-1
1.5x10-12
B
db
5279
0
0
-1
1.5x10-12
Bs
Bs0
Bs0
sb
5375
0
0
-1
...
...
Upsilon
Self
bb
9460.4
0
0
0
1.3x10-20
...
To Baryon Table

1* The neutral Kaons and 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.

Meson diagramDiscussion of mesons
Index

Particle concepts

References
Serway
Ch. 47

Giancoli
Ch. 32

Griffiths
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