Symmetries in particle physics

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Symmetries Isospin and scattering amplitudes At c.m. energies around the Δ-mass, one can expect that , and therefore, there Experimentally, it is simpler to combine (c) and (j), leading to
Symmetries Isospin and G-parity Pions and isospin: G-parity How does this work for the mesons (the pions) Pions = bound states of a quark and an antiquark, so naively: “Just add the isospins like the spins”. But: Rules of spin addition not sufficient. How to “bar” a spin Problem: want to preserve some symmetries like charge conjugation under “barring”. G-parity (a group-theory construct) demands: conserved quantum number in strong interactions.
Page 1 and 2: Symmetries in particle physics Symm
Page 3 and 4: Symmetries Adding two spin-1/2 Ofte
Page 5 and 6: Symmetries Clebsch-Gordan coefficie
Page 7 and 8: Symmetries From spin to isospin Who
Page 9 and 10: Symmetries From spin to isospin Who
Page 11 and 12: Symmetries Isospin and scattering a
Page 13: Symmetries Isospin and scattering a
Page 17 and 18: The eightfold way, revisited Some S
Page 19 and 20: The eightfold way, revisited Some S
Page 21 and 22: The eightfold way, revisited The ps
Page 23 and 24: The eightfold way, revisited An alt
Page 25 and 26: Discrete symmetries: Parity and tim
Page 27 and 28: Discrete symmetries: Parity Parity
Page 29 and 30: Discrete symmetries: Parity Helicit
Page 31 and 32: Discrete symmetries: CP violation M
Page 33 and 34: Discrete symmetries: CP violation M

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