Results 71 to 80 of about 1,585 (136)

Higgs decays at NLO in the SMEFT

open access: yesJournal of High Energy Physics
A bstract The calculation of precise predictions for Higgs decays is a necessary ingredient for determining Higgs properties at the LHC and future colliders.
Luigi Bellafronte   +4 more
openaire   +2 more sources

Field reparametrization in SMEFT [PDF]

open access: yesThe European Physical Journal Plus, 2017
Debate topic for effective field theory (EFT) is the choice of a “basis” for ${\rm dim}= 6$ operators. Clearly all bases are equivalent as long as they are a “basis”, containing a minimal set of operators ...
openaire   +1 more source

Theoretical developments in the SMEFT at dimension-8 and beyond [PDF]

open access: yes, 2022
In this contribution to the Snowmass 2021 process we review theoretical developments in the Standard Model Effective Field Theory (SMEFT) with a focus on effects at the dimension-8 level and beyond.
Yu, Jiang-Hao   +26 more
core  

A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector

open access: yesJournal of High Energy Physics, 2019
We present a novel framework for carrying out global analyses of the Standard Model Effective Field Theory (SMEFT) at dimension-six: SMEFiT. This approach is based on the Monte Carlo replica method for deriving a faithful estimate of the experimental and
Nathan P. Hartland   +6 more
doaj   +1 more source

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

open access: yesJournal 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
doaj   +1 more source

LHC EFT WG note: SMEFT predictions, event reweighting, and simulation [PDF]

open access: yes
This note provides a comprehensive overview of tools for predicting observables in theStandard Model effective field theory (SMEFT) at both tree level and one loop using eventgenerators. We evaluate three primary methodologies–event reweighting, separate
Mattelaer, Olivier   +18 more
core   +5 more sources

Higgs production from anomalous gluon dynamics

open access: yesJournal of High Energy Physics
We present a two-loop analysis of the contributions to Higgs production via gluon-gluon fusion arising from the triple-gluon operator in the Standard Model effective field theory (SMEFT).
Ulrich Haisch
doaj   +1 more source

Reactor neutrino oscillations as constraints on effective field theory

open access: yesJournal of High Energy Physics, 2019
We study constraints on the Standard Model Effective Field Theory (SMEFT) from neutrino oscillations in short-baseline reactor experiments. We calculate the survival probability of reactor antineutrinos at the leading order in the SMEFT expansion, that ...
Adam Falkowski   +2 more
doaj   +1 more source

Constraints on standard model effective field theory for a Higgs boson produced in association with W or Z bosons in the H → b b ¯ $$ \textrm{b}\overline{\textrm{b}} $$ decay channel in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV

open access: yesJournal of High Energy Physics
A standard model effective field theory (SMEFT) analysis with dimension-six operators probing nonresonant new physics effects is performed in the Higgs-strahlung process, where the Higgs boson is produced in association with a W or Z boson, in proton ...
The CMS collaboration   +2382 more
doaj   +1 more source

To profile or to marginalize - A SMEFT case study

open access: yesSciPost Physics
Global SMEFT analyses have become a key interpretation framework for LHC physics, quantifying how well a large set of kinematic measurements agrees with the Standard Model. This agreement is encoded in measured Wilson coefficients and their uncertainties. A technical challenge of global analyses are correlations. We compare, for the first time, results
Brivio, Ilaria   +5 more
openaire   +4 more sources

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