PH-502  Sub-atomic Physics II

  1. Additive conservation laws, conserved quantities and symmetries, electric charge, baryon number, lepton and lepton flavor number, strangeness and flavor, additive quantum numbers of quarks.
  2. Electromagnetic interaction, electromagnetic scattering of leptons, vector mesons as mediators of the photon-hadron interaction, electron – positron collisions and quarks, photon–hadron interaction, real and spacelike photons.
  3. Importance of P,C,CP, and T in elementary particle physics, parity operation, intrinsic parities, conservation and breakdown of parity, charge conjugation, time reversal, two-state problem, neutral kaons, fall of CP invariance.
  4. Weak interactions, muon decay, weak current of leptons, chirality versus helicity, the weak coupling constant gf, weak decays of quarks and the CKM matrix, weak currents in nuclear physics, inverse beta decay, detection of neutrons, massive neutrinos, Majorana versus Dirac neutrinos, weak current of hadrons at high energies,
  5. Introduction to gauge theories, Aharonov – Bohm effect, gauge invariance for non-abelian fields, Higgs mechanisms, spontaneous symmetry breaking, gauge bosons and weak isospin, electroweak interaction, tests of the standard model, quantum chromodynamics, QCD at low energies.
  6. Range and strength of the low-energy strong interaction, Pion – nucleon interaction, Yukawa theory of nuclear forces, low-energy nucleon – nucleon force, meson theory of the nucleon – nucleon force, strong processes at high energies.
  7. Overview: grand unified theories, supersymmetry, string theories


Recommended texts: