Discovery and Measurement of the Higgs Boson in the WW Decay ChannelSpringer, 15 jun 2015 - 160 pagina's This thesis describes the stand-alone discovery and measurement of the Higgs boson in its decays to two W bosons using the Run-I ATLAS dataset. This is the most precise measurement of gluon-fusion Higgs boson production and is among the most significant results attained at the LHC. The thesis provides an exceptionally clear exposition on a complicated analysis performed by a large team of researchers. Aspects of the analysis performed by the author are explained in detail; these include new methods for evaluating uncertainties on the jet binning used in the analysis and for estimating the background due to associated production of a W boson and an off-shell photon. The thesis also describes a measurement of the WW cross section, an essential background to Higgs boson production. The primary motivation of the LHC was to prove or disprove the existence of the Higgs boson. In 2012, CERN announced this discovery and the resultant ATLAS publication contained three decay channels: gg, ZZ, and WW. |
Inhoudsopgave
1 | |
2 Computational Techniques for the LHC | 15 |
3 The ATLAS Experiment | 28 |
4 Overview of the HrightarrowWW Analysis | 41 |
5 Signal Modelling | 71 |
6 WW Measurement and Modelling | 86 |
7 Other Backgrounds | 105 |
8 Experimental Results | 129 |
9 Status of Higgs Physics | 145 |
10 Conclusions | 157 |
About the Author | 159 |
Overige edities - Alles bekijken
Discovery and Measurement of the Higgs Boson in the WW Decay Channel David Hall Geen voorbeeld beschikbaar - 2016 |
Discovery and Measurement of the Higgs Boson in the WW Decay Channel David Hall Geen voorbeeld beschikbaar - 2015 |
Discovery and Measurement of the Higgs Boson in the WW Decay Channel David Hall Geen voorbeeld beschikbaar - 2015 |
Veelvoorkomende woorden en zinsdelen
algorithm ATLAS Collaboration ATLAS detector ATLAS experiment b-tagging calculated calorimeter CMS Collaboration collisions control region correction coupling cross section data-driven dataset described dijet dilepton Djet efficiency electron electroweak emissions evaluated event selection experimental extrapolation fake factor fermions ffiffi s p fiducial frecoil gauge gauge bosons gluon hadronic hadronisation hep-ex hep-ph Higgs boson Higgs boson production interactions jet binning jet veto JHEP lepton Lett luminosity mass measured muon Nambu-Goldstone bosons neutrinos non-WW diboson number of events observed particles parton shower parton-level perturbative phase space photon Phys pile-up pinvT predicted primary vertex processes quark reconstruction reweight Sect Sherpa signal region signal strength Single top SM sys Standard Model stat statistical systematic uncertainty T T T T T]W+jet Tevatron theoretical uncertainties tracks transverse momentum trigger W+jet weak interaction WW Decay Channel γγ