Results 61 to 70 of about 1,585 (136)

Top Quark Flavor Changing Couplings at a Muon Collider

Advances in High Energy Physics, Volume 2024, Issue 1, 2024.
There is growing interest in the development of a muon collider that would make it possible to produce lepton collisions at energies of several TeV. Among others, there can be significant contributions to electroweak gauge boson, Higgs boson, and top quark physics.
Daniel Ake, Antonio O. Bouzas, F. Larios, Roelof Bijker   +3 more
wiley   +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

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

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

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

Addendum to: Scheming in the SMEFT. . . and a reparameterization invariance! [PDF]

Journal of High Energy Physics, 2018
Abstract We allow two independent flavor contractions for the operator $$ {\mathcal{Q}}_{ll} $$ Q l l
Brivio, Ilaria, Trott, Michael
openaire   +3 more sources

SMEFT probes in future precision DIS experiments [PDF]

, 2023
We analyze the potential of future high-energy deep-inelastic scattering (DIS) experiments to probe new physics within the framework of the Standard Model Effective Field Theory (SMEFT).
Bissolotti, Chiara, Boughezal, Radja, Simsek, Kaan   +2 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

Weak scale triggers in the SMEFT

Journal of High Energy Physics
A bstract There are no weak scale triggers in the SMEFT up to dimension six that can solve the hierarchy problem far above the weak scale. Our arguments can be used to show that the same is true at dimension eight.
Pier Giuseppe Catinari, Raffaele Tito D’Agnolo, Pablo Sesma   +2 more
openaire   +2 more sources

Build from the SMEFT up - SMEFT global analyses as a bottom-up approach to constrain BSM physics [PDF]

, 2023
Measurements at the Large Hadron Collider have so far been remarkably compatible with the Standard Model. Standard Model effective field theory (SMEFT) global analyses are an established framework to re-interpret combinations of measurements as ...
Geoffray, Emma
core   +1 more source