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Durham e-Theses
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Constraining New Physics at the

GREGG, PARISA,THERESA (2022) Constraining New Physics at the
Doctoral thesis, Durham University.



We analyse constraints that can be placed on CP-violating operators in the dimension-six Standard Model Effective Field Theory. We consider the associated production of a Higgs boson and a photon in weak boson fusion. We construct an asymmetry in a CP-sensitive observable which we use to analyse the sensitivity of this channel to possible CP violation. Additionally, we constrain CP-violating charged and neutral anomalous triple gauge couplings with diboson and VBF $Vjj$ production at the LHC. We analyse charged triple gauge couplings in the dimension-six Standard Model Effective Field Theory using asymmetries to place constraints of CP-violating Wilson coefficients. For neutral triple gauge couplings we present bounds in terms of a general anomalous coupling framework using high energy transverse momentum bins. Finally, we consider next-to-leading order electroweak virtual corrections to $W$+jets production at the LHC. We investigate the ability of a neural network to learn electroweak $k$-factors for partonic channels with two, three and four final partons.

Item Type:Thesis (Doctoral)
Award:Doctor of Philosophy
Faculty and Department:Faculty of Science > Physics, Department of
Thesis Date:2022
Copyright:Copyright of this thesis is held by the author
Deposited On:23 May 2022 13:28

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