Spontaneous symmetry breaking and higgs mechanism

Kahraman, Işınsu
The relevance of Higgs mechanism to nature has been verified recently by two experiments, CMS and ATLAS at Large Hadron Collider. Therefore, a detailed understanding of the mechanismis mportant more than ever.The details of Higgs potential, its stability and mass generation mechanism are going to be explored and the Higgs particle which is the quantum fluctuation of the field will be discussed within the sponteneous symmetry breaking notion. The one loop corrections to the effective potential for various toy models as well as the Standard model are discussed within two different methods.  


Study of high mass Higgs using pp -> qqH
Yildiz, HD; Zeyrek, Mehmet Tevfik (2003-08-01)
The observability of the Higgs signal in the mass range of 200-800 GeV is investigated in the weak boson fusion channel at the CMS experiment at LHC. The weak boson fusion channel is characterized by two final state jets at large pseudorapidity. The forward calorimeter plays a key role in detecting these jets. The significant signals are obtained for H --> WW --> lvjj, H --> ZZ --> lljj and H --> ZZ --> llvv. Importance of the forward jet tagging and the central jet veto is emphasized to extract the signal ...
Observing Higgs in weak boson fusion with forward jet tagging at the CERN CMS experiment
Yıldız, Hatice Duran; Zeyrek, Mehmet Tevfik; Department of Physics (2002)
The experimental observation of Higgs boson will be fundamental for a better understanding of the electroweak symmetry breaking mechanism. In this thesis the Standard Model Higgs boson decaying to a WW or ZZ pair in the weak boson fusion channel is studied for the LHC CMS experiment at CERN. This study utilizes the PYTHIA Monte Carlo event generator and the CMS detector simulation (CMS JET). Throughout this work, the observability of Higgs signal in the wide mass range is explored through WW -> lujj, ZZ ->?...
Study of misalignment effects in the CMS forward hadron calorimeter
Kılınç, Cemali; Güler, Ali Murat; Department of Physics (2016)
The Compact Muon Selonoid (CMS) is a general purpose detector at the Large Hadron Collider (LHC). It is designed to investigate a wide range of physics, including the search for the Higgs boson and physics beyond the Standard Model. The CMS detector consists of various sub-detector systems, measuring energy, momentum, charge and trajectory of the particles produced by the proton-proton collision in the detector. The Forward Hadron Calorimeter (HF), a sub-system of Hadron Calorimeter (HCAL), identi es and me...
Integrability of Kersten-Krasil'shchik coupled KdV-mKdV equations: singularity analysis and Lax pair
Karasu, Emine Ayşe; Yurdusen, I (AIP Publishing, 2003-04-01)
The integrability of a coupled KdV-mKdV system is tested by means of singularity analysis. The true Lax pair associated with this system is obtained by the use of prolongation technique. (C) 2003 American Institute of Physics.
Combined search for the Standard Model Higgs boson in pp collisions at ffiffiffi root s=7 TeV with the ATLAS detector
Aad, G.; et. al. (2012-08-02)
A combined search for the Standard Model Higgs boson with the ATLAS detector at the LHC is presented. The data sets used correspond to integrated luminosities from 4.6 fb(-1) to 4.9 fb(-1) of proton-proton collisions collected at root s = 7 TeV in 2011. The Higgs boson mass ranges of 111.4 GeV to 116.6 GeV, 119.4 GeV to 122.1 GeV, and 129.2 GeV to 541 GeVare excluded at the 95% confidence level, while the range 120 GeV to 560 GeV is expected to be excluded in the absence of a signal. An excess of events is ...
Citation Formats
I. Kahraman, “Spontaneous symmetry breaking and higgs mechanism,” M.S. - Master of Science, Middle East Technical University, 2017.