Results 61 to 70 of about 3,683 (143)

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

SciPost 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

Higher dimensional operators in 2HDM

, 2017
We present a complete (non-redundant) basis of CP- and flavour-conserving six-dimensional operators in a two Higgs doublet model (2HDM). We include Z_2-violating operators as well.
Karmakar, Siddhartha, Rakshit, Subhendu
core   +1 more source

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

, 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, Wang, Ying-Ying, Yang, Ji-Chong, Yue, Chong-Xing   +3 more
core   +2 more sources

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

Journal 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

SmeftFR -- Feynman rules generator for the Standard Model Effective Field Theory

, 2019
We present SmeftFR, a Mathematica package designed to generate the Feynman rules for the Standard Model Effective Field Theory (SMEFT) including the complete set of gauge invariant operators up to dimension~6.
Dedes, A., Paraskevas, M., Rosiek, J., Suxho, K., Trifyllis, L.   +4 more
core   +2 more sources

A framework for simultaneous fit of QCD and BSM parameters with xFitter

European Physical Journal C: Particles and Fields
An extension of the xFitter open-source program for QCD analyses is presented, allowing for a polynomial parameterization of the dependence of physical observables on theoretical parameters.
Xiao-Min Shen, Simone Amoroso, Jun Gao, Katerina Lipka, Oleksandr Zenaiev   +4 more
doaj   +1 more source

Dimension-8 SMEFT matching conditions for the low-energy effective field theory

Journal of High Energy Physics, 2023
In particle physics, the modern view is to categorize things in terms of effective field theories (EFTs). Above the weak scale, we have the SMEFT, formed when the heavy new physics (NP) is integrated out, and for which the Standard Model (SM) is the ...
Serge Hamoudou, Jacky Kumar, David London   +2 more
doaj   +1 more source

NLO Standard model effective field theory for Higgs and EW precision data [PDF]

, 2016
A set of constructs, definitions, and propositions that present a systematic view of the Standard Model Effective Field Theory (SMEFT), i.e. how the influence of higher energy processes is localizable in a few structural properties which can be captured ...
Passarino, Giampiero
core   +1 more source

Yukawa enhancement of $Z$-mediated New Physics in $\Delta S = 2$ and $\Delta B = 2$ Processes

, 2017
We discuss Yukawa-enhanced contributions from $Z$-mediated new physics to down-type quark $\Delta F=2$ processes in the framework of the standard model gauge-invariant effective theory (SMEFT).
Bobeth, Christoph, Buras, Andrzej J., Celis, Alejandro, Jung, Martin   +3 more
core   +1 more source

A $$ {\mathbbm{CP}}^2 $$ SMEFT

Journal of High Energy Physics
Abstract An extension of the Standard Model is proposed, where the Higgs field is valued in the complex projective plane $$ {\mathbbm{CP}}^2 $$ CP 2 , rather than
openaire   +4 more sources