(Downloads - 0)
For more info about our services contact : help@bestpfe.com
Table of contents
1 The Standard Model Higgs boson
1.1 The Prediction of the SM Higgs boson
1.1.1 Gauge symmetries
1.1.2 Spontaneous symmetry-breaking
1.1.3 The Higgs mechanism
1.1.4 The SM Higgs boson
1.2 Constraints on the Higgs boson mass
1.2.1 Theoretical constraints
1.2.2 Experimental exclusion before the LHC
1.2.3 Indirect experimental constraints
1.3 The Higgs boson search at the LHC
1.3.1 Higgs boson production at the LHC
1.3.2 Higgs boson search channels
1.3.3 The H ! channel
2 The ATLAS experiment at the LHC
2.1 The Large Hadron Collider
2.1.1 Introduction
2.1.2 Objectives
2.1.3 General layout
2.1.4 The LHC main ring
2.1.5 Performance
2.1.6 Operational history
2.2 The ATLAS experiment
2.2.1 Detector overview
2.2.2 The ATLAS collaboration
2.2.3 Detector requirements
2.2.4 Coordinate system and nomenclature
2.3 Magnet system
2.3.1 Central solenoid
2.3.2 Barrel and end-cap toroids
2.4 Inner detector
2.4.1 Precision silicon sensors
2.4.2 Transition radiation tracker
2.5 Calorimeters
2.5.1 The electromagnetic calorimeter
2.5.2 Hadronic calorimeter
2.5.3 Forward calorimeters
2.6 Muon spectrometer
2.7 Trigger system 54
2.8 Computing framework
2.8.1 Computing facilities
2.8.2 Software
2.8.3 Data processing and formats
2.9 Simulation
3 Identifcation and reconstruction of photons in ATLAS
3.1 Reconstruction of photon candidates
3.2 Identifcation of electrons, converted and unconverted photons
3.3 Photon energy measurement
3.4 Photon identifcation
3.5 Isolation criteria
4 Statistical analysis procedure
4.1 General aspects
4.2 Testing the signal-plus-background hypothesis
4.3 Asymptotic approximation for setting exclusion limits
4.4 Testing the background-only hypothesis
4.5 Systematic uncertainties
5 The H ! analysis
5.1 Introduction
5.2 Samples
5.2.1 Data samples
5.2.2 Monte Carlo samples
5.2.3 Diphoton event selection
5.2.4 Selection of the primary vertex
5.2.5 Diphoton invariant mass
5.3 Expected signal
5.3.1 Signal mass distribution
5.3.2 Uncertainty on the signal peak position
5.3.3 Signal eciency and yields
5.4 Background composition
5.4.1 Decomposition methods
5.4.2 Drell Yan Background
5.4.3 Background composition results
5.5 Event categorization
5.5.1 Categorization according to the photon conversion status and direction
5.5.2 Categorization based on the p Tt discriminant variable
5.5.3 2-jet category
5.5.4 Categorization summary
5.5.5 Systematic uncertainties on the distribution of signal events among the categories
5.6 Data modeling
5.6.1 Signal parametrization
5.6.2 Signal systematic uncertainties
5.6.3 Background parameterization and uncertainties
5.7 Results
5.7.1 Exclusion limits
5.7.2 Excess quantifcation
5.7.3 Excess characterization
6 Overview of recent results of the Higgs boson search
6.1 Observation of a new particle
6.2 Properties of the new boson
