Sumários
Exercise class 11
29 Maio 2024, 11:00 • João Nuno Ramalho Gonçalves Pires
Discussion and solution of the eleventh series of exercises.
Theory lecture 13
29 Maio 2024, 08:30 • João Nuno Ramalho Gonçalves Pires
- Top quark discovery at the Tevatron
- Higgs searches at LEP and the Tevatron
- Higgs mechanism: spontaneous symmetry breaking of global U(1) symmetry: goldstone bosons
- Higgs mechanism: spontaneous symmetry breaking of local U(1) gauge theory: massive gauge fields and unitary gauge
- The Standard Model Higgs doublet: symmetry breaking of the local SU(2)_L x U(1)_Y EW theory
- Mass terms for the W+,W- and Z0 gauge fields of the EW interaction
- Fermion mass terms and Yukawa interactions between the Higgs and the Standard Model fermions
- Experimental Higgs discovery at the LHC
- Higgs boson properties
- Review of the building blocks of the Standard model and the free parameters of the theory
- Open questions left unanswered in the Standard Model
Exercise class 10
22 Maio 2024, 11:00 • João Nuno Ramalho Gonçalves Pires
Discussion and solution of the tenth series of exercises.
Theory lecture 12
22 Maio 2024, 08:30 • João Nuno Ramalho Gonçalves Pires
- The W-boson decay
- The weak interaction gauge group SU(2)_L
- Charged and neutral weak currents of the SU(2)_L gauge group
- Electroweak unification in the Glashow, Salam, Weinberg (GSW) model of the electroweak interactions: SU2_L x U1_Y
- Photon and Z vector fields and the Weinberg angle
- Weak-hypercharge particle assignments
- Z-boson neutral current and Z-boson couplings to fermions
- Experimental discovery of the neutral currents
- Precision tests of the GSW model of the electroweak interaction at LEP
- Z-boson mass and width measurements at LEP
- Leptonic forward and backward assymetry in leptonic decays of the Z and the measurement of the Weinberg angle
- W+W- cross section measurements at LEP
- W boson mass and width measurements at LEP
Theory lecture 11
20 Maio 2024, 14:00 • 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
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.