Results 61 to 70 of about 3,754 (159)

Loop counting matters in SMEFT

open access: yes, 2022
We show that, in addition to the counting of canonical dimensions, a counting of loop orders is necessary to fully specify the power counting of Standard Model Effective Field Theory (SMEFT). Using concrete examples, we demonstrate that considering the canonical dimensions of operators alone may lead to inconsistent results.
Buchalla, Gerhard   +3 more
openaire   +2 more sources

Higgs associated production with a vector decaying to two fermions in the geoSMEFT

open access: yesSciPost Physics
We present the inclusive calculations of a Higgs boson produced in association with massive vector bosons in the Standard Model Effective Field Theory (SMEFT) to order $1/\Lambda^4$ for the 13 TeV LHC.
Tyler Corbett, Adam Martin
doaj   +1 more source

Constraints on anomalous quartic gauge couplings via $W\gamma jj$ production at the LHC

open access: yes, 2020
The vector boson scattering at the Large Hadron Collider (LHC) is sensitive to anomalous quartic gauge couplings (aQGCs). In this paper, we investigate the aQGC contribution to $ W \gamma jj$ production at the LHC with $\sqrt{s}=13$ TeV in the context of
Guo, Yu-Chen   +3 more
core   +2 more sources

Semileptonic $\tau$ decays: powerful probes of non-standard charged current weak interactions [PDF]

open access: yes, 2019
When looking for heavy ($\mathcal{O}$(few TeV)) New Physics, the most efficient way to benefit from both high and low-energy measurements simultaneously is the use of the Standard Model Effective Field Theory (SMEFT).
Roig, Pablo
core   +2 more sources

Froggatt-Nielsen meets the SMEFT

open access: yesJournal of High Energy Physics
Abstract We study the matching of Froggatt-Nielsen theories of flavour onto the Standard Model Effective Field Theory (SMEFT), upon integrating out a heavy Beyond-the-Standard-Model (BSM) scalar ‘flavon’ whose vacuum expectation value breaks an Abelian flavour symmetry at energies ΛFN well above the electroweak scale, ΛFN
Eetu Loisa, Jim Talbert
openaire   +5 more sources

Interpreting W mass measurements in the SMEFT [PDF]

open access: yesPhysics Letters B, 2016
6pp, 4 figures V2: minor typo corrections and text clarifications, matches journal ...
Bjørn, Mikkel, Trott, Michael
openaire   +4 more sources

Connecting t-channel dark matter models to the Standard Model Effective Field Theory

open access: yesJournal of High Energy Physics
We investigate the connection between simplified dark matter models featuring a t-channel scalar mediator and the Standard Model Effective Field Theory (SMEFT).
S. Biondini, L. Tiberi, O. Panella
doaj   +1 more source

EFT Diagrammatica. Part II. Tracing the UV origin of bosonic D6 CPV and D8 SMEFT operators

open access: yesJournal of High Energy Physics, 2022
In recent times, SMEFT, along with a superlative repertoire of theoretical and computational tools, has emerged as an efficacious platform to test the viability of proposed BSM scenarios. With symmetry as the backbone, higher mass dimensional (≥ 5) SMEFT
Wrishik Naskar   +2 more
doaj   +1 more source

Vector boson fusion at multi-TeV muon colliders

open access: yes, 2020
High-energy lepton colliders with a centre-of-mass energy in the multi-TeV range are currently considered among the most challenging and far-reaching future accelerator projects. Studies performed so far have mostly focused on the reach for new phenomena
Costantini, Antonio   +6 more
core   +1 more source

More accurate σ GG → h , Γ h → GG AA Ψ ¯ Ψ $$ \sigma \left(\mathcal{GG}\to h\right),\Gamma \left(h\to \mathcal{GG},\mathcal{AA},\overline{\Psi}\Psi \right) $$ and Higgs width results via the geoSMEFT

open access: yesJournal of High Energy Physics
We develop Standard Model Effective Field Theory (SMEFT) predictions of σ( GG $$ \mathcal{GG} $$ → h), Γ(h → GG $$ \mathcal{GG} $$ ), Γ(h → AA $$ \mathcal{AA} $$ ) to incorporate full two loop Standard Model results at the amplitude level, in conjunction
Adam Martin, Michael Trott
doaj   +1 more source

Home - About - Disclaimer - Privacy