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PARTICLE |
PARTICLE |
ELECTRIC CHARGE |
MASS |
MEAN LIFE |
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LEPTONS |
electron |
e- |
-1 |
0.511 |
stable |
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muon |
|
-1 |
106 |
2.2 × 10-6 |
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tau |
|
-1 |
1,777 |
3 × 10-13 |
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electron neutrino |
e |
0 |
0? |
stable |
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muon neutrino |
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0 |
0? |
stable |
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QUARKS |
up |
u |
+2/3 |
1.5 to 5 |
N/A |
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down |
d |
-1/3 |
3 to 9 |
N/A |
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strange |
s |
+2/3 |
1,100 to 1,400 |
N/A |
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charm |
c |
-1/3 |
60 to 170 |
N/A |
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top |
t |
+2/3 |
~170,000 |
N/A |
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bottom |
b |
-1/3 |
4,100 to 4,400 |
N/A |
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BOSONS |
photon |
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0? |
0? |
N/A |
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gluon |
g |
0 |
0? |
N/A |
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W+ |
W+ |
+1 |
80,000 |
N/A |
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W- |
W- |
-1 |
80,000 |
N/A |
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Z |
Z |
0 |
91,000 |
N/A |
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BARYONS |
proton |
p+ |
+1 |
938 |
stable |
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neutron |
n |
0 |
940 |
887 |
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positive sigma |
+ |
+1 |
1,189 |
8 × 10-10 |
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neutral sigma |
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-1 |
1,193 |
7 × 10-20 |
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neutral lamda |
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0 |
1,116 |
3 × 10-10 |
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MESONS |
positive pion |
+ |
+1 |
140 |
2.6 × 10-8 |
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neutral pion |
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0 |
135 |
8.4 × 10-17 |
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negative pion |
- |
-1 |
140 |
2.6 × 10-8 |
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positive kaon |
+ |
+1 |
494 |
1.2 × 10-8 |
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negative kaon |
- |
-1 |
494 |
1.2 × 10-8 |
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D plus |
D+ |
+1 |
1,869 |
1.1 × 10-12 |
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D minus |
D- |
-1 |
1,869 |
1.1 × 10-12 |
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