Higgs and Effective Field Theory HEFT 2023

Session

Tuesday AM2

20 Jun 2023, 11:00

Manchester

Conveners

Tuesday AM2

• Alejo Nahuel Rossia (University of Manchester)

43. EFT analysis of New Physics at COHERENT

Martin Gonzalez-Alonso (CERN)

20/06/2023, 11:00

1. Diboson production in the SMEFT from gluon fusion

Marion Thomas

20/06/2023, 11:30

We study the loop-level gluon-fusion diboson production in the SMEFT framework. We compute analytically the helicity amplitudes for all dimension-6 operators and identify those that generate growth with energy and hence can be better constrained. Additionally, we perform a phenomenological analysis of gluon-fusion Zh production at HL-LHC, combining it for the first time with quark-initiated Zh...

31. One-loop fermion corrections to VBS scattering

Mr Carlos Quezada Calonge (Universidad Complutense de Madrid)

20/06/2023, 11:50

We study the one-loop corrections to Vector Boson Scattering within the framework of effective theories. We focus our attention on fermion-loop corrections which scale like $\mathcal{O}(s/v^4)$ in the Higgs Effective Field Theory (HEFT). Although this dependency is formally suppressed for $s \rightarrow \infty$ with respect to that from boson loops, the large top mass can lead to a numerical...

30. Electroweak input schemes and universal corrections in SMEFT

Tommy Smith

20/06/2023, 12:10

The choice of an electroweak (EW) input scheme is an important component of perturbative calculations in Standard Model Effective Field Theory (SMEFT). We perform a systematic study of three different EW input schemes in SMEFT, in particular those using the parameter sets $\{M_W, \, M_Z, \, G_F\}$, $\{M_W, \, M_Z, \, \alpha\}$, or $\{\alpha, \, M_Z, \, G_F\}$. We discuss general features and...