Results 11 to 20 of about 2,079 (110)

SMEFT at NNLO+PS: Vh production [PDF]

Journal of High Energy Physics
In the context of the Standard Model effective field theory (SMEFT) the next-to-next-to-leading (NNLO) QCD corrections to the Higgsstrahlungs (Vh) processes in hadronic collisions are calculated and matched to a parton shower (PS).
Ulrich Haisch, Rhorry Gauld, Luc Schnell
exaly   +4 more sources

Higgs decays to two leptons and a photon beyond leading order in the SMEFT [PDF]

SciPost Physics, 2022
We present the three-body decay of the Higgs boson into two leptons and a photon to dimension-eight in the Standard Model Effective Field Theory (SMEFT).
Tyler Corbett, Thor Rasmussen
doaj   +2 more sources

Is SMEFT enough?

Journal of High Energy Physics, 2021
There are two canonical approaches to treating the Standard Model as an Effective Field Theory (EFT): Standard Model EFT (SMEFT), expressed in the electroweak symmetric phase utilizing the Higgs doublet, and Higgs EFT (HEFT), expressed in the broken ...
Timothy Cohen, Nathaniel Craig, Xiaochuan Lu, Dave Sutherland   +3 more
doaj   +2 more sources

SMEFT deviations [PDF]

European Physical Journal C: Particles and Fields, 2023
This work is based on a bottom-up approach to the standard-model effective field theory (SMEFT), resulting in an equiprobable space of Wilson coefficients.
Federico Camponovo, Giampiero Passarino
doaj   +2 more sources

Flavourful SMEFT likelihood for Higgs and electroweak data

Journal of High Energy Physics, 2020
We perform an updated fit to LHC Higgs data and LEP electroweak precision tests in the framework of the Standard Model Effective Field Theory (SMEFT). We assume a generic structure of the SMEFT operators without imposing any flavour symmetries.
Adam Falkowski, David Straub
doaj   +2 more sources

EWPD in the SMEFT to dimension eight

Journal of High Energy Physics, 2021
We calculate the O H † H 2 / Λ 4 $$ \mathcal{O}\left({\left\langle {H}^{\dagger }H\right\rangle}^2/{\Lambda}^4\right) $$ corrections to LEP electroweak precision data using the geometric formulation of the Standard Model Effective Field Theory (SMEFT ...
Tyler Corbett, Andreas Helset, Adam Martin, Michael Trott   +3 more
doaj   +2 more sources

A package for renormalization group running in the SMEFT with sterile neutrinos

European Physical Journal C: Particles and Fields
Sterile neutrinos are well-motivated beyond the Standard Model (BSM) particles. The Standard Model Effective Field Theory (SMEFT) augmented with these new fields is known as the $$\nu $$ ν SMEFT.
Jason Aebischer, Tejhas Kapoor, Jacky Kumar   +2 more
doaj   +2 more sources

Tree-level UV completions for N R SMEFT d = 6 and d = 7 operators

Journal of High Energy Physics, 2023
We study ultra-violet completions for operators in standard model effective field theory extended with right-handed neutrinos (N R SMEFT). Using a diagrammatic method, we generate systematically lists of possible tree-level completions involving scalars,
Rebeca Beltrán, Ricardo Cepedello, Martin Hirsch   +2 more
doaj   +2 more sources

A case study of SMEFT O(1/Λ4) \mathcal{O}\left(1/{\Lambda}^4\right) effects in diboson processes: pp → W±(ℓ±ν)γ

Journal of High Energy Physics
In this paper we explore pp → W ± (ℓ ± ν)γ to O 1 / Λ 4 $$ \mathcal{O}\left(1/{\Lambda}^4\right) $$ in the SMEFT expansion. Calculations to this order are necessary to properly capture SMEFT contributions that grow with energy, as the interference ...
Adam Martin
exaly   +2 more sources

Improving the global SMEFT picture with bounds on neutrino NSI

Journal of High Energy Physics
We analyze how neutrino oscillation and coherent elastic neutrino-nucleus scattering data impact the global SMEFT fit. We first review the mapping between the SMEFT parameters and the so-called NSI framework, commonly considered in the neutrino ...
Pilar Coloma, Enrique Fernandez-Martinez, Jacobo Lopez-Pavon   +2 more
exaly   +2 more sources