Results 61 to 70 of about 4,794 (202)
Impact of SMEFT renormalisation group running on Higgs production at the LHC [PDF]
Journal of High Energy PhysicsWe study the effects of the one-loop renormalisation group running/mixing of the Wilson coefficients in the standard model effective field theory on the predictions for Hj, $$ t\overline{t}H $$ t t ¯ H and HH production at the LHC. We focus on a
F. Maltoni +2 more
semanticscholar +1 more source
Leptoquarks meet $\varepsilon'/\varepsilon$ and rare Kaon processes [PDF]
, 2016 We analyse for the first time the CP violating ratio $\varepsilon'/\varepsilon$ in $K\to \pi\pi$ decays in leptoquark (LQ) models. Assuming a mass gap to the electroweak (EW) scale, the main mechanism for LQs to contribute to $\varepsilon'/\varepsilon ...
Alok K. Mukherjee (1400752) +3 more
core +4 more sources
The Higgs width in the SMEFT [PDF]
Journal of High Energy Physics, 2019 Abstract We calculate the total and partial inclusive Higgs widths at leading order in the Standard Model Effective Field Theory (SMEFT). We report results incorporating SMEFT corrections for two and four body Higgs decays through vector currents in this limit. The narrow width approximation is avoided and all phase space integrals
Ilaria Brivio +3 more
openaire +8 more sources
Complete One-Loop Matching for a Singlet Scalar in the Standard Model EFT [PDF]
, 2018 We present the results of the first complete one-loop matching calculation between the real singlet scalar extension of the Standard Model and the Standard Model effective field theory (SMEFT) at dimension six.
Craig, Nathaniel +3 more
core +2 more sources
On interference and non-interference in the SMEFT [PDF]
Journal of High Energy Physics, 2018 Abstract We discuss interference in the limit $$ {\widehat{m}}_W^2/s\to 0 $$ m ^ W 2 /
Helset, Andreas, Trott, Michael
openaire +6 more sources
One loop verification of SMEFT Ward Identities [PDF]
SciPost Physics, 2021 We verify Standard Model Effective Field Theory Ward identities to one loop order when background field gauge is used to quantize the theory. The results we present lay the foundation of next to leading order automatic generation of results in the SMEFT, in both the perturbative and non-perturbative expansion using the geoSMEFT formalism, and ...
Corbett, Tyler, Trott, Michael
openaire +6 more sources
Can New Physics hide inside the proton? [PDF]
, 2019 Modern global analyses of the structure of the proton include collider measurements which probe energies well above the electroweak scale. While these provide powerful constraints on the parton distribution functions (PDFs), they are also sensitive to ...
Carrazza, Stefano +4 more
core +3 more sources
Flavourful SMEFT likelihood for Higgs and electroweak data
Journal of High Energy Physics, 2020 We perform an updated fit to LHC Higgs data and LEP electroweak precision tests in the framework of the Standard Model Effective Field Theory (SMEFT). We assume a generic structure of the SMEFT operators without imposing any flavour symmetries.
Adam Falkowski, David Straub
doaj +1 more source
Leptonic anomalous magnetic moments in ν SMEFT [PDF]
Journal of High Energy Physics, 2021 Abstract We investigate contributions to the anomalous magnetic moments of charged leptons in the neutrino-extended Standard Model Effective Field Theory (νSMEFT). We discuss how νSMEFT operators can contribute to a lepton’s magnetic moment at one- and two-loop order.
Richard Ruiz +6 more
openaire +4 more sources
Rotation-equivariant graph neural network for learning hadronic SMEFT effects [PDF]
Physical Review DWe introduce a graph neural network architecture designed to extract novel phenomena in the Standard Model Effective Field Theory (SMEFT) context from LHC collision data.
S. Chatterjee +3 more
semanticscholar +1 more source