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Title: NLO QCD And two weak bosons at the LHC
Author: Melia, Tom
Awarding Body: University of Oxford
Current Institution: University of Oxford
Date of Award: 2012
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We present original calculations of standard model processes involving two weak bosons at NLO in QCD, and study related phenomenology with reference to Higgs boson and new physics searches at the LHC. We employ a new theoretical technique, D-dimensional generalised unitarity, to obtain the multi-particle, one-loop scattering amplitudes for the processes pp → W+W- + 1j, pp → W+W- + 2j, pp → W+W+ + 2j, and gg → W+W-g. We consider the LHC phenomenology of: the W+W- + n jets background to Higgs searches, for n = 0,1,2; the effects of anomalous tri-linear gauge couplings in WW and WZ production; the background W+W+ + 2j to new physics searches involving like-sign leptons; and a method of spin determination of new states in a scenario where conventional methods fail.
Supervisor: Zanderighi, Giulia Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Theoretical physics ; Particle physics