Results 61 to 70 of about 4,206 (182)

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

Uniting low-energy semileptonic and hadronic anomalies within SMEFT

Journal of High Energy Physics
Two categories of four-fermion SMEFT operators are semileptonic (two quarks and two leptons) and hadronic (four quarks). At tree level, an operator of a given category contributes only to processes of the same category.
Alakabha Datta, Jacky Kumar, Suman Kumbhakar, David London   +3 more
doaj   +1 more source

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

Journal 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, Suraj Prakash, Shakeel Ur Rahaman   +2 more
doaj   +1 more source

Leptonic CP violation in the charged sector and effective field theory approach

, 2017
These proceedings introduce the main techniques and ideas for a systematic effective field theory analysis of CP violation in the charged lepton sector. This study is required because the Standard Model of particle physics predicts a very high degree of ...
Pruna, Giovanni Marco
core   +1 more source

Loop counting matters in SMEFT

, 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, Heinrich, Gudrun, Müller-Salditt, Christoph, Pandler, Florian   +3 more
openaire   +2 more sources

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

Interpreting W mass measurements in the SMEFT [PDF]

Physics 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

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