# PHYSICS OF ELEMENTARY PARTICLES

**PHYSICS 9012 (coorte 2019/2020)**- NUCLEAR AND PARTICLE PHYSICS AND ASTROPHYSICS 2 61847
- THEORETICAL PHYSICS 61842
- MATHEMATICAL METHODS IN PHYSICS 61843
- MATTER PHYSICS 2 61844

**PHYSICS 9012 (coorte 2020/2021)**- NUCLEAR AND PARTICLE PHYSICS AND ASTROPHYSICS 2 61847
- THEORETICAL PHYSICS 61842
- MATTER PHYSICS 2 61844

OVERVIEW

The course aims to deepen some of the topics that are at the heart of modern research in particle physics.

## AIMS AND CONTENT

LEARNING OUTCOMES

The aim of the course is to present the basic analytical tools and the phenomenological bases of modern particle physics, through various examples and applications.

AIMS AND LEARNING OUTCOMES

- introducing basic tools to understand modern particle physics and the necessary pre-requisite to achieve an understanding of particle physics based on quantum mechanics and relativity
- introducing modern particle physics from a phenomenological viewpoint
- introducing to techniques and methods to study elementary particles’ properties and their interactions, with particular focus on the theory and phenomenology of strong interactions.
- discussing open problems in high-energy physics
- all topics are complemented by examples and applications

Teaching methods

Blackboard lectures accompanied by examples and exercises.

SYLLABUS/CONTENT

- Recap on the Standard Minimal Model of fundamental interactions.
- Complements of Quantum Mechanics. Examples and Applications to FdP.
- Complements of Relativistic Mechanics. Examples and Applications to FdP.
- Decays and Scattering; operator S; impulse and helicity eigenstates. Decay width and cross section. Phase space. Invariant amplitude of transition. Outline of the perturbative and heuristic methods of Feynman diagrams. Examples and Applications.
- Symmetries. Symmetries and transition amplitudes. Conservation Laws. Examples and Applications.
- The determination of the properties of the particles. Partial Wave analysis and helical analysis. Examples and Applications.
- The Standard Model; massive neutrinos; the CKM and PMNS matrices; precision fit.
- Physics of heavy flavors.
- Phenomenology of QCD.
- The violation of CP and hints to bariogenesis.

RECOMMENDED READING/BIBLIOGRAPHY

**Principali Riferimenti Bibliografici**

Fisica relativistica: Hagedorn, Byckling-Kajantie.

Fisica quantistica: Sakurai.

Teoria dei campi: Weinberg, Landau, Misner-Thorne-Wheeler, Peskin-Schroeder.

Simmetrie: Sozzi, Bigi-Sanda, Sakurai.

Fisica matematica: Ticciati.

Fenomenologia: Nagashima, Quang Ho-Kim, Xuan-Yem Pham

## TEACHERS AND EXAM BOARD

Exam Board

ALESSANDRO PETROLINI (President)

FEDERICO SFORZA

CARLO SCHIAVI

ROBERTA CARDINALE

FABRIZIO PARODI (President Substitute)

## LESSONS

Teaching methods

Blackboard lectures accompanied by examples and exercises.

## EXAMS

Exam description

Written test with exercises aimed at verifying the concepts of the first part of the course. The oral exam instead consists of a discussion of the written test and an interview aimed at verifying the topics covered in the second part of the course.

Assessment methods

The written exam contains exercises both of a theoretical nature, aimed at verifying the comprehension of the arguments developed in class, and of applicative nature. In the latter case, the resolution of numerical problems aims to verify that the student is familiar with the concepts discussed in class and he/she can apply them to solve physical problems. The oral exam, of a duration of about 30 minutes, instead consists essentially in the exposition of one of the topics addressed during the study of strong interactions.