Lectures on LHC Physics

  title={Lectures on LHC Physics},
  author={Tilman Plehn},
  • T. Plehn
  • Published 21 October 2009
  • Physics
With the discovery of the Higgs boson the LHC experiments have closed the most important gap in our understanding of fundamental interactions. We now know that the interactions between elementary particles can be described by quantum field theory, more specifically by a renormalizable gauge theory. This theory is valid to arbitrarily high energy scales and do not require an ultraviolet completion. In these notes I cover three aspects to help understand LHC results in the Higgs sector and in… 

Precision Measurements of Higgs Couplings: Implications for New Physics Scales

The measured properties of the recently discovered Higgs boson are in good agreement with predictions from the Standard Model. However, small deviations in the Higgs couplings may manifest themselves

The Higgs legacy of the LHC Run I

A bstractBased on Run I data we present a comprehensive analysis of Higgs couplings. For the first time this SFitter analysis includes independent tests of the Higgs-gluon and top Yukawa couplings,

Beyond the Standard Higgs at the LHC: present constraints on Little Higgs models and future prospects

This thesis discusses the consistency of different Little Higgs models with the collected collider data as of the summer of 2013. Moreover, future prospects for possible discov- eries and mass

New Directions in Top Physics

The top quark plays an important role for many aspects of particle physics. The coupling of the Higgs boson to top quarks is a key parameter to probe electroweak symmetry breaking and is important

Study of the Drell-Yan process with the ATLAS detector at the LHC

The Large Hadron Collider (LHC) at CERN, at which protons collide at unprecedented center of mass energies and very high instantaneous luminosity, gives unique possibilities for precise tests of the

The Status of Supersymmetry after the LHC Run 1

Supersymmetry (SUSY) is a complete and renormalisable candidate for an extension of the Standard Model. At an energy scale not too far above the electroweak scale it would solve the hierarchy problem

Higgs from top to bottom : Discovery of the Higgs boson coupling to top quarks with the ATLAS detector

In the Standard Model (SM) of particle physics, it is expected that the Higgs boson as a scalar spin-0 particle gives mass to all other elementary particles. In addition, the coupling to the top

Heavy to light Higgs boson decays at NLO in the singlet extension of the Standard Model

A bstractWe study the decay of a heavy Higgs boson into a light Higgs pair at one loop in the singlet extension of the Standard Model. To this purpose, we construct several renormalization schemes

The Higgs mass and the scale of new physics

A bstractIn view of the measured Higgs mass of 125 GeV, the perturbative renormalization group evolution of the Standard Model suggests that our Higgs vacuum might not be stable. We connect the usual

Higgs Pair Production at the LHC through the Flavon

The detection of a single Higgs boson at the Large Hadron Collider (LHC) has allowed one to probe some properties of it, including the Yukawa and gauge couplings. However, in order to probe the Higgs



Four generations and Higgs physics

In the light of the LHC, we revisit the implications of a fourth generation of chiral matter. We identify a specific ensemble of particle masses and mixings that are in agreement with all current


The investigation of the dynamics responsible for electroweak symmetry breaking is one of the prime tasks of experiments at present and future colliders. Experiments at the Tevatron Collider and at

New physics at the LHC.

Basics of QCD Perturbation Theory

A prediction for experiment based on perturbative QCD combines • a particular calculation of Feynman diagrams (easy at leading order, not so easy at next-to-leading order). • use of general features

Hard interactions of quarks and gluons: a primer for LHC physics

In this paper, we will develop the perturbative framework for the calculation of hard-scattering processes. We will undertake to provide both a reasonably rigorous development of the formalism of

Measuring the Higgs sector

If we find a light Higgs boson at the LHC, there should be many observable channels which we can exploit to measure the relevant parameters in the Higgs sector. We use the SFitter framework to map

Searching for the Higgs boson

These lectures on Higgs boson collider searches were presented at TASI 2006. I first review the Standard Model searches: what LEP did, prospects for Tevatron searches, the program planned for LHC,