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Standard model of particle physics

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Presentation on theme: "Standard model of particle physics"— Presentation transcript:

1 Standard model of particle physics
wan ahmad tajuddin wan abdullah jabatan fizik universiti malaya

2 Elementary particles and fields

3 hadrons

4 EM Quantum Electrodynamics (local) gauge invariance
  ψ(x) → eiθ ψ(x)   U(1) gauge field theory minimal coupling Hamiltonian: +

5 Electroweak Unified weak + EM [couplings related e.g. e+e-  W+W-]
SU(2)xU(1) gauge field theory A+ A- A B0 Spontaneous symmetry breaking – Higgs mechanism A+ A- A B  W+ W- Z0 g W and Z acquires mass Flavour mixing

6 strong SU(3) gauge field theory – colour charges Gluons has colour:
confinement Asymptotic freedom

7 Gravity General relativity Gravitational lensing


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