Sumários

Theory lecture 11

11 Maio 2022, 08:30 • João Nuno Ramalho Gonçalves Pires

  • Charged weak interaction of quarks
  • Cabbibo hypothesis
  • The charm quark and the GIM mechanism
  • CKM quark mixing matrix: weak eigenstates and mass eigenstates
  • Experimental determination of the CKM matrix elements
  • CP violation in the neutral Kaon system
  • Neutrino discovery
  • DIS neutrino-proton scattering
  • Neutrino oscillations and neutrino masses
  • PMNS neutrino mixing matrix
  • Solar, atmospheric, Reactor and accelerator Neutrino experiments
Recommended reading: Chapters 12,13 and 14 of Mark Thomson's book. Chapters 4.6-4.9 and 10.5 of D.Griffith's book. 

Exercise class 9

6 Maio 2022, 08:30 • João Nuno Ramalho Gonçalves Pires

Discussion and solution of the ninth series of exercises.


Theory lecture 10

4 Maio 2022, 08:30 • João Nuno Ramalho Gonçalves Pires

  • Introduction to the gauge theory of the weak interaction
  • Experimental observation of parity violation in nuclear beta decay
  • The parity violating vector - axial (V-A) Lorentz invariant weak charged current
  • Chirality decomposition of Dirac spinors and the chiral structure of the weak interaction
  • The W vertex coupling to left chiral particle states and right chiral antiparticle states
  • The W-boson massive spin 1 propagator
  • Fermi theory and the strength of the weak interaction coupling constant
  • Helicity in pion decay: The pion to electron/anti-neutrino and muon/anti-neutrino branching ratio decay in the context of the V-A weak vertex
  • Experimental evidence for the lepton Universality coupling strength in the weak charged W current
Recommended reading: chapter 11 and 6.4 of Mark Thomson's book and chapter's 10.1 to 10.4 of D.Griffith's book.

Exercise class 8

29 Abril 2022, 08:30 • João Nuno Ramalho Gonçalves Pires

Discussion and solution of the eigth series of exercises.

Theory lecture 9

27 Abril 2022, 08:30 • João Nuno Ramalho Gonçalves Pires

  • e+e- annihilation to hadrons: experimental evidence for QCD colour degree of freedom
  • hadronization, jet production and jet algorithms at LEP: dijet angular distributions with spin 1/2 final state quarks
  • gluon emission in 3-jet events at LEP: gluon spin determination
  • experimental tests of the non-abelian QCD triple gluon vertex with 4 jet events at LEP
  • renormalization in QED and QCD
  • running coupling constants of QED and QCD
  • experimental evidence for asymptotic freedom of the SU(3) QCD coupling constant
  • factorization theorem for hadron-hadron cross sections at the LHC
  • hadron collider event kinematics
  • Drell-Yan and jet production at the LHC and the search for new physics beyond the Standard Model
Recommended reading: Chapter 10 of Mark Thomson's book and Chapter 9 of D.Griffith's book