Results 51 to 60 of about 1,160 (154)

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

Journal 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

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

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

On the non-minimal character of the SMEFT

Physics Letters B, 2017
When integrating out unknown new physics sectors, what is the minimal character of the Standard Model Effective Field Theory (SMEFT) that can result? In this paper we focus on a particular aspect of this question: “How can one obtain only one dimension ...
Yun Jiang, Michael Trott
doaj   +1 more source

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

Anomalous dimensions from gauge couplings in SMEFT with right-handed neutrinos [PDF]

, 2021
Alakabha Datta, Jacky Kumar, Hongkai Liu, Danny Marfatia   +3 more
openalex   +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

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 Fernández-Martínez, Jacobo López-Pavón, Xabier Marcano, Daniel Naredo-Tuero, Salvador Urrea   +5 more
doaj   +1 more source

An EWPD SMEFT likelihood for the LHC — and how to improve it with measurements of W and Z boson properties

Journal of High Energy Physics
This paper presents a computer code for analyzing electroweak precision data (EWPD) in the framework of the Standard Model Effective Field Theory (SMEFT), highlights the importance of recent ATLAS and CMS precision measurements, and introduces a novel ...
Hannes Mildner
doaj   +1 more source