Results 101 to 110 of about 4,794 (202)
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
A framework for simultaneous fit of QCD and BSM parameters with xFitter
European Physical Journal C: Particles and FieldsAn 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 +4 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
SMEFT effects on the gravitational wave spectrum from an electroweak phase transition [PDF]
, 2023 Katsuya Hashino, Daiki Ueda
openalex +1 more source
Triboson production in the SMEFT
Journal of High Energy PhysicsAbstract We study the production of three electroweak gauge bosons at the LHC, in the effective field theory of the standard model, at dimension six and next-to-leading order in QCD. We present results for inclusive cross-sections and differential distributions, finding that these QCD corrections are large, often vary across the ...
Eugenia Celada +3 more
openaire +3 more sources
Connecting t-channel dark matter models to the Standard Model Effective Field Theory
Journal of High Energy PhysicsWe 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
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 +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
Collider sensitivity to SMEFT heavy-quark operators at one-loop in top-quark processes [PDF]
Journal of High Energy PhysicsWe study the effects of four-heavy-quark operators in the production of top quarks in the framework of the Standard Model Effective Field Theory (SMEFT) at the LHC. In particular, we compute for the first time the total contribution of the four-top-quark
C. Degrande +2 more
semanticscholar +1 more source