The main goal is to give a general overview of the phenomenology of the Strong Interaction in the Standard Model. The first part of the course illustrates the main features of the nucleon-nucleon interaction that leads to the formation of atomic nuclei. A phenomenological potential model for this interaction is described in order to achieve a realistic description of the many-body nuclear problem. The second part of the course describes the phenomenology of the nucleon and its resonances, and its interpretation in terms of the theory of Strong Interactions in the Standard Model, the Quantum ChromoDynamics (QCD). The aim of the course is to provide the student with an overview of the basic arguments of Nuclear Physics, and to introduce him/her to more recent developments (collected under the so-called Hadronic Physics, according to a more modern terminology), trying to convey the basic skills for tackling more specific topics that are subject of current forefront research.
Course Prerequisites
It is recommended to attend the course after Introduction to Nuclear Physics and Quantum Electrodynamics.
Teaching Methods
Traditional front lectures projecting Keynote slides and personal notes. All material is available to students on the e-learning framework Kiro either in original format (Keynote) or in PDF, including a videorecording of the lecture. Each lecture is structured as to look as much as possible like an independent seminar, namely a presentation and critical discussion of a specific argument, because this is what the oral examination does consist of.
Assessment Methods
Oral examination. It consists in delivering a seminar, followed by discussion, about deepening the knowledge on a topic to be chosen among those ones listed in the Programme, plus verifying a general knowledge of the other topics. The main goal is to test the student about how deep is his/her knowledge of the chosen topic, and to test his/her skills in delivering a clear and effective message in an enjoyable way. In other words, the goal is to educate the student through a professional approach to a problem or to a unknown topic, by developing those skills that are necessary in the academic research activity as well as outside it. The oral presentation is evaluated in fractions of 30.
Texts
- M.A. Preston and R.K. Bhaduri, "Structure of the Nucleus" (Westview Press, 1975 reprint 1982) - K.S. Krane, "Introductory Nuclear Physics" (John Wiley & Sons, 1988) - F. Close, "An Introduction to Quarks and Partons" (Academic Press, 1979) - M.E. Peskin and D.V. Schroeder, "An Introduction to Quantum Field Theory" (Addison-Wesley, 1995) - R.G. Roberts, "The Structure of the Proton - Deep Inelastic Scattering" (Cambridge Univ. Press, 1990) - C.T.E.Q. Collaboration, "Handbook of perturbative QCD", Rev. Mod. Phys. vol. 67 (1995) 157-248, https://www.physics.smu.edu/scalise/cteq/handbook/v1.1/handbook.pdf Other material available at the e-learning framework Kiro.
Contents
Main features of the nucleon-nucleon interaction: independence from electric charge, dependence from spin, isospin, other symmetries. Theory of electron-nucleus scattering: expansion in multipoles, magnetic and quadrupole moments, form factors and the size of nuclei. The deuteron case and non-central forces. Construction of the OBEP potential. Introduction to the many-body nuclear problem and to an effective single-particle model: the shell model. Symmetries of the strong interaction and the baryon and meson spectra: the quark model of Gell- Mann. Electron-nucleon scattering: form factors of the nucleon and quark models. Scaling in the electron-nucleon scattering and the parton model: tests of the model, the “spin crisis”. Beyond the parton model: scaling violations and brief introduction to Altarelli-Parisi evolution equations, as well as to the Operator Product Expansion (OPE). OPE and a rigorous definition of partonic distributions.