Symmetries in particle physics
Symmetries in particle physics
Symmetries in particle physics
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>Symmetries</strong><br />
From sp<strong>in</strong> to isosp<strong>in</strong><br />
Who carries isosp<strong>in</strong><br />
Remember Heisenberg's proposal:<br />
p and n are just two manifestations of the same<br />
<strong>particle</strong>, the nucleon. Identify them with the<br />
isosp<strong>in</strong>-up and isosp<strong>in</strong>-down states of the nucleon:<br />
Catch: Isosp<strong>in</strong> conserved <strong>in</strong> strong <strong>in</strong>teractions!<br />
Will dwell on that a bit: Play with pions, nucleons<br />
and Delta's.<br />
(Note: Multiplicity <strong>in</strong> each multiplet: 2I+1).
Change language