History, quark model and the SU(3)-symmetry
History, quark model and the SU(3)-symmetry
History, quark model and the SU(3)-symmetry
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Simela Aslanidou 14.12.2006<br />
Quark <strong>model</strong><br />
Cross section<br />
More common<br />
( ) ∑<br />
πα<br />
=<br />
→<br />
σ<br />
−<br />
+<br />
f<br />
N<br />
i<br />
i<br />
c<br />
²<br />
Q<br />
N<br />
s<br />
3<br />
²<br />
4<br />
hadrons<br />
e<br />
e<br />
( )<br />
²<br />
Q<br />
N<br />
s<br />
3<br />
4<br />
hadrons<br />
e<br />
e<br />
R<br />
f<br />
N<br />
i<br />
i<br />
c ∑<br />
=<br />
πα<br />
→<br />
σ<br />
=<br />
−<br />
+<br />
3<br />
1<br />
Q<br />
3<br />
2<br />
Q<br />
3<br />
1<br />
Q<br />
3<br />
2<br />
Q<br />
3<br />
1<br />
Q<br />
3<br />
2<br />
Q<br />
<strong>quark</strong>s<br />
of<br />
charge<br />
Q<br />
colours<br />
of<br />
number<br />
N<br />
4<br />
e<br />
bottom<br />
top<br />
strange<br />
charm<br />
down<br />
up<br />
i<br />
i<br />
2<br />
−<br />
=<br />
=<br />
−<br />
=<br />
=<br />
−<br />
=<br />
=<br />
=<br />
=<br />
π<br />
=<br />
α
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