History, quark model and the SU(3)-symmetry
History, quark model and the SU(3)-symmetry
History, quark model and the SU(3)-symmetry
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Quark <strong>model</strong><br />
• <strong>quark</strong>s come in 6 flavours<br />
up, down, strange, charm, bottom top,<br />
<strong>the</strong>se are <strong>the</strong> six different kinds of <strong>quark</strong>s<br />
• according to <strong>the</strong> regularity of <strong>the</strong> leptons<br />
<strong>quark</strong>s show <strong>the</strong> same family structure<br />
⎛<br />
⎜<br />
⎝<br />
u<br />
d<br />
⎞<br />
⎟<br />
⎠<br />
,<br />
⎛<br />
⎜<br />
⎝<br />
c<br />
s<br />
⎞<br />
⎟<br />
⎠<br />
,<br />
⎛ t ⎞<br />
⎜ ⎟<br />
⎝b<br />
⎠<br />
m<br />
m<br />
m<br />
u<br />
s<br />
b<br />
=<br />
1,<br />
5 to 4 MeV<br />
=<br />
=<br />
80 to130<br />
4.<br />
1 to 4.<br />
4<br />
MeV<br />
GeV<br />
m<br />
m<br />
m<br />
= 4 to 8 MeV<br />
= 1.<br />
15 to1.<br />
35 GeV<br />
= ( 174.<br />
3 ± 5.<br />
1)GeV<br />
Simela Aslanidou 14.12.2006<br />
d<br />
c<br />
t
Change language