GREGG, PARISA,THERESA (2022) Constraining New Physics at the
LHC. 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 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 +jets production at the LHC. We investigate the ability of a neural network to learn electroweak -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|
|Copyright:||Copyright of this thesis is held by the author|
|Deposited On:||23 May 2022 13:28|