• Extension of isospin symmetry to include the strange quark: SU(3) flavour symmetry
• Meson Octets and Singlets of flavour SU(3)
• Baryon Decuplets and Octects of flavour SU(3)

Discussion and solution of the fifth series of exercises.

Symmetries in Particle Physics

• Discrete symmetries and Unitary operators
• Continuous symmetries: Translational invariance and linear momentum conservation 
• Symmetry groups U(N) and SU(N)
• U(1) group and local U(1) gauge symmetry of quantum electrodynamics
• Local gauge symmetry principle
• SU(2) and SU(3) symmetry groups for gauge theories of the electroweak and the strong interaction in the Standard Model 
• Approximate flavour symmetry of the strong interaction SU(2) u/d Isospin symmetry
• Combining quarks to form meson and baryon states of the approximate isospin SU(2) symmetry
• Ground state baryon wavefunctions: wavefunction for a spin-up proton

• Double differential Lorentz Invariant cross section for Deep Inelastic electron-proton Scattering 
• F1 and F2 structure function measurements at SLAC
• Bjorken scaling and Callan-Gross relation
• DIS cross section reinterpreted in the quark-parton model
• Elastic electron-quark scattering
• Parton distribution functions fits with structure function data: from SLAC to HERA experiments 
• Sea and Valence quark distribution functions

Recommended reading: Chapter's 8.2 - 8.6 of Mark Thomson's book, Chapter's 8.5 - 8.6 of D.Griffith's book.