Standard model and beyond

11 Nov 2025 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

Introduction to the Standard Model. Fermi interaction, charged current, beta decays and parity violation. Effective theories and low-energy limit, relation to the functional integral, charged current and the W boson.

12 Nov 2025 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

Gauge Lagrangian, non-abelian gauge theories, charged and neutral currents. Matter content of the Standard Model, hypercharge and extensions of the gauge group, chiral representations and two-component spinors.

25 Nov 2025 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

Chiral vs vector-like theories. Gauge Lagrangian of the Standard Model, weak mixing angle, photon and Z boson. Spontaneous symmetry breaking, Higgs mechanism, Ward identities in broken theories, Goldstone bosons, unitary gauge and xi-gauge, gauge fixing and Goldstone-gauge mixing. The Higgs sector of the Standard Model, gauge boson masses.

26 Nov 2025 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

Parameters of the Standard Model at tree-level. Electroweak scheme and measurements of the SM parameters. Yukawa interactions and fermions masses. Neutrino-electron scattering and neutral currents, vector and axial coupling of the Z boson.

02 Dic 2025 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

e+e- scattering and determination of the weak mixing angle, total cross-section and forward-backward asymmetry; parity violation in atomic physics; dispersion relations and hadronic contribution to the running of the fine-structure constant.

03 Dic 2025 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

Global symmetries of the Standard Model: the fermion sector. Flavor symmetry and Yukawa interactions, baryon and lepton number, family lepton number and neutrino masses, the CKM matrix and its physical parameters, see-saw mechanism and the Weinberg operator, SM as an effective theory.

09 Dic 2025 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

Global symmetries of the SM: custodial symmetry and its breaking, the rho parameter, relation with EW symmetry breaking. Extended Higgs sectors and custodial symmetry.

10 Dic 2025 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

Introduction to LEP physics, radiative corrections and pseudo-observables. Effective couplings of the Z boson, total rates and asymmetries, cross-section for e+e- into fermion pairs at the Z pole, rho parameter as a pseudo-observable.

16 Dic 2025 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

Radiative corrections in the Standard Model, corrections to input parameters and (pseudo-)observables, computation of the W boson mass at one loop, computation of the rho parameter in the SM.

13 Gen 2026 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

Electroweak precision tests, contributions to the rho parameter from top mass and Higgs boson mass, the epsilon parameters, EW fit and determinations of the SM parameters at one loop. S, T, W, Y parameters, relation to the pseudo-observables, the SM as an EFT.

14 Gen 2026 (2h 00m)

DARIO Buttazzo - Corso (attività didattica) - In presenza

Loop contributions to the EW observables, running of the Wilson coefficients, IR logarithms. Higgs boson phenomenology, tree-level decays into fermions and vector bosons, loop-level decays into photons and gluons, low energy theorem.