# Program

### Lectures and topics

** RICCARDO BARBIERI **(SNS)

*The Standard Model and some of its extensions *
video

Lecture 1 (slides): The SM and its status, as of 2016

Lecture 2 (slides): Problems of (questions for) the SM

Lecture 3 & 4 (slides): Minimal Mirror Twin Higgs

Lecture 5 (slides): Anomalies in B-decays

Lecture 6 (slides): Axion searches by way of their coupling to the spin

**GLEN COWAN ** (Royal Holloway, University of London)

* Statistical Methods for Particle Physics * video

Lecture 1: Introduction

Review of probability, Bayes' theorem

Overview of Frequentist and Bayesian statistics

Parameter estimation: the method of maximum likelihood, variance of estimators

Definition of a frequentist test: critical region, size, power, p-vaues

Lecture 2: Multivariate statistical tests

The Neyman-Pearson Lemma

Brief overview of multivariate methods:

Fisher Discriminant, Neural Network, Boosted Decision Tree

Lecture 3: More on statistical tests

Tests for discovery and limits

Nuisance parameters: frequentist and Bayesian treatment

Experimental sensitivity

The main statistics course page of Prof. Cowan

Exercises for the afternoon sessions

The lectures from a previous school in Beijing

**FABIO MALTONI ** (Universite’ Catholique de Louvain)

* QCD and Collider Physics * video

An introduction to the phenomenology of strong interactions at high-energy colliders is given. We focus on the basic concepts and results in perturbative QCD that allow us not only to describe but also reliably predict rates and features of SM (as well as of New Physics) events at the LHC.

Lecture 1. The parton model: from DIS to hadron-hadron collider phenomenology.

Lecture 2. Perturbative QCD as a weakly interacting theory of gluons and quarks at high-energy.

Lecture 3. The IR structure of QCD in e+e- collisions: infrared safety, parton showers and jets.

Lecture 4. Factorisation, DGLAP evolution, accurate and precise QCD predictions for LHC physics.

Lecture 5. Selected topics in New Physics searches and SM measurements the LHC.

The course includes tests, simple exercises, fully worked out numerical calculations/simulations, and a complete and easy-to-use series of mathematica notebooks which support the computation at next-to-leading order accuracy of the total production cross section of a Higgs boson in gluon-gluon fusion at the LHC.

See https://cp3.irmp.ucl.ac.be/projects/madgraph/wiki/GGI2017

**ALBERTO NICOLIS ** (Columbia University)

*Effective Field Theories for Gravity * video

These lectures will focus on field theoretical aspects of gravitational interactions. We will construct general relativity from the bottom up, as the only low-energy theory
for interacting massless spin-two particles (gravitons) consistent with quantum mechanics and Lorentz invariance. We will discuss its validity as a quantum effective field theory, and address the question of what replaces it at microscopic scales.

We will discuss possible modifications to its dynamics in the IR, at cosmological scales.

Finally, we will construct an effective theory for long wavelength gravitational fields coupled to astrophysical systems with multipole moments, such as a binary system, which can be efficiently used to compute gravitational wave emission by such systems.

Further reading

**GERALDINE SERVANT ** (DESY & Hamburg U.)

* Early Universe Cosmology * video

The lectures will focus on baryogenesis, with emphasis on mechanisms occurring at the electroweak scale, in which the Higgs is a key player.

Lecture 1. Thermal history, initial conditions

Lecture 2. Sakharov conditions, B violation in SM, sphalerons

Lecture 3. Baryogenesis from out-of-equilibrium decay

Lecture 4. EW baryogenesis: nature of EW phase transition, Higgs potential at finite T, charge transport mechanism

Lecture 5. Other aspects of Higgs cosmology

**ZOHAR KOMARGODSKI ** (Weizmann Institute)

* Advanced Topics in Quantum Field Theory *
video

List of topics:

1. From statistical physics to QFT and CFT, symmetries, representations and all that

2. Correlation functions, Operator Product Expansion, Bootstrap Equations

3. Anomalies in Quantum Mechanics. Central Extensions, Projective Representations

4. Anomalies in 2d

5. Matching and comparing anomalies along RG flows