Lectures start on Wednesday 26 Feb 2025
All communication and news will appear on Google Classroom. All students attending the course are kindly asked to register on google classroom, code urpjxku. You can register exclusively with your uniroma1 credentials (no personal google account).
Exams
It is mandatory to make the reservation on infostud for the session of your interest if you intend to take the exam. All comunications regarding the calendar of oral exams will be through infostud.
The exams will take place over several days starting on the date indicated on infostud. At the closing of the reservations, students are asked to indicate their preference for a few dates and time slots and the calendar is communicted through infostud and published on this page before the starting date.
All oral exams will take place in the Stanza 251-B, Piano 2, Edificio Marconi (CU013).
Lecture schedule
- Monday, 12-14, Aula 3 "Nella Mortara" , Edificio Fermi (CU033)
- Tuesday 8-10, Aula 3 "Nella Mortara" , Edificio Fermi (CU033): March: 18, 25, April: 1, 15, 29, May, 13, 20, 27 (lectures start at 8:30)
- Wednesday 10-12, Aula 3 "Nella Mortara", Edificio Fermi (CU033)
Lectures
| Date | Topic | Material |
|---|---|---|
| 2025-02-26 | Introduction. Collisions and decays. Unstable particles. Decay width and lifetime. Q value. Fermi Golden Rule. (Griffiths Ch. 6, Terranova Ch. 2) | board |
| 2025-03-03 | Two-body decay width. Branching fraction. Collisions with fixed target and collinding beams. Definition of cross section. Instantaneous and integrated luminosity (Griffiths Ch. 6, Terranova Ch. 2) | board |
| 2025-03-05 | Cross section: calculation of 1+2 → 3+4 scattering with Fermi's Golden rule. Rutherford scattering. The Mott formula. e+e- → e+e- and μ+μ-. (Griffiths Ch. 6, Terranova Ch. 2) | board |
| 2025-03-10 | Resonant cross section and the Breit-Wigner distribution. (Griffiths Ch. 6, Terranova Ch. 2) Probing structure of nucleons: Rutherford and Mott cross sections. Deviations in α scattering on nuclei. (Perkins Ch. 5, Goldhaber Ch. 8) | board |
| 2025-03-12 | Electron-nucleon scattering: elastic and inelastic. electron-nucleon scattering for pointlike and extended target. Form factors. (Perkins Ch. 5, Goldhaber Ch. 8) | board |
| 2025-03-17 | electron-nucleon scattering for Dirac proton: Rosenbluth formula. Experimental proof of proton structure. (Perkins Ch. 5, Goldhaber Ch. 8) | board |
| 2025-03-18 | Deep Inelastic electron-proton scattering. Structure functions. Probing structure functions at SLAC. (Perkins Ch. 5, Goldhaber Ch. 8) | board |
| 2025-03-19 | Quark Parton Model. Scaling of structure functions with x. Feynman interpretation of x in DIS. Valence and sea partons. Parton density functions. (Perkins Ch. 5, Goldhaber Ch. 8, Torrenova Ch.7.7) | board |
| 2025-03-24 | Continuous and discrete symmetries. Quantum numbers and conservation laws. Ispspin: hypothesis and experimental proof in hadron scattering. (Terranova Ch. 5, Griffiths Ch. 4) (Clebsch_Gordan coeff. on PDG) | board |
| 2025-03-25 | Isospin in π-nucleon scattering. Discrete symmetries and their eigenvalues. Parity. parity of composite states. Charge Conjugation. (Terranova Ch. 5, Griffiths Ch. 4) | board |
| 2025-03-26 | Charge Conjugation of composite states. G-parity. Strangeness, charge and hypercharge. Gell-Mann Nishijima formula. SU(3) flavor and Static quark model. (Terranova Ch. 5 and 8, Griffiths Ch. 4, Perkins Ch. 4) | board |
| 2025-03-31 | Static quark model. Meson multiplets. Light meson mixing. Decay of ρ0. Baryon multiplets. (Terranova Ch. 8, Griffiths Ch. 4, Perkins Ch. 4) | board |
| 2025-04-01 | Static quark model. Baryon multiplets. Prediction and discovery of Ω-. Baryon decays. Examples of spectator and internal diagrams for weak decays of Ω-; Symmetry ofbaryon decuplet. Hypothesis of new quantum number: color. (Terranova Ch. 8, Perkins Ch. 4, Griffiths Ch. 4, Cahn-Goldhaber ch. 5) | board |
| 2025-04-02 | Color quantum number. gluons as generators of SU(3) color. Matrix elements for QCD and comparison with QED. αs and asymptotic freedom in QCD. Baryon decuplet and singlet multipletes. (Terranova Ch. 7 and 8, Perkins Ch. 4, Griffiths Ch. 4, Cahn-Goldhaber ch. 5) | board |
| 2025-04-09 | Baryon octets. Baryon and Meson wave functions. SU(4) flavor with charm quark. SU(5) with beauty. D and B mesons and limits of flavor symmetry. + e- → + e- μ+μ-, hadrons. Energy threshold for production of hadrons. (Terranova Ch. 8, Perkins Ch. 4, Griffiths Ch. 4) | board |
| 2025-04-14 | Muon pair production. e + e-→μ+μ-: total and differential cross section. Pair production of quarks. Ratio R of hadronic and muon cross sections. Measurement of R. PETRA e+e- collider at DESY. The JADE detector. Experimental technqiues for identification of e+e-→e+e-, μ+μ-,τ+τ-, hadrons (Griffiths Ch.8, Perkins Ch. 5.1, 5.2, Cahn-Goldhaber Ch. 10) | board |
| 2025-04-15 | Bhabha scattering. Annihilation diagram ant t-channel diagram. Mandelstam variables. u-, t-, and s-channel diagrams. Measurement of R. Experimental evidence of quarks and color. π0 decays: allowed and suppressed modes. Seatch for new particles in di-leptons. Detector resolution. Pros and cons of e+e- and μ+μ- final states. (Griffiths Ch.8, Perkins Ch. 5.1, 5.2, Cahn-Goldhaber Ch. 9 and 10) | board |
| 2025-04-16 | Discovery of J/Ψ and charm quark. J/Ψ properties. Measurement of J/Ψ width. Charmonium resonances. Decay of q-qbar resonances: Decays of ρ(770) and Φ(1020). (Cahn-Goldhaber Ch. 9) | board |
| 2025-04-28 | Decay of q-qbar resonances: Decays of J/Ψ. Disovery of the τ lepton. Discovery of the bottom quark and the Υ (b-bbar) resonances. (Cahn-Goldhaber Ch. 9, 11) | board |
| 2025-04-29 | Discovery of the top quark. parton-parton scattering. Center of mass energy in parton-parton interaction. Missing transverse momentum. (Cahn-Goldhaber Ch. 14) | board |
| 2025-04-29 | Weak interactions. Number of neutrino flavors. Examples of weak decays. Weak vs. QED and QCD. Heavy weak mediator and Fermi constant GF. Weak interaction as a chrial theory: Helicity and chirality. (Terranova Ch. 10, Cahn-Goldhaber Ch. 14, 6, Griffiths Ch. 9, Perkins Ch. 9) | board |
| 2025-05-05 | Examples of selection rules in hadron decays: ρ, ω, Φ, and J/Ψ decays. Examples of decay diagrams in B mesons. | |
| 2025-05-07 | Helicity of neutrinos. The Goldhaber experiment. Helicity suppression. Chiral weak interaction. (Terranova Ch. 10.6, Goldhaber Ch. 6, Perkins Ch. 7) |