Results 51 to 60 of about 4,794 (202)
smelli – the SMEFT Likelihood [PDF]
Proceedings of Tools for High Energy Physics and Cosmology — PoS(TOOLS2020), 2021 I present the Python package smelli that implements a global likelihood function in the space of dimension-six Wilson coefficients in the Standard Model Effective Field Theory (SMEFT). The likelihood includes contributions from a large number of flavor and other precision observables, currently 399 in total.
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Dimension-8 SMEFT analysis of minimal scalar field extensions of the Standard Model [PDF]
Journal of High Energy Physics, 2023 We analyze the constraints obtainable from present data using the Standard Model Effective Field Theory (SMEFT) on extensions of the Standard Model with additional electroweak singlet or triplet scalar fields.
J. Ellis, K. Mimasu, Francesca Zampedri
semanticscholar +1 more source
The rise of SMEFT on-shell amplitudes [PDF]
Journal of High Energy Physics, 2019 Abstract We present a map between the tree-level Standard Model Effective Theory (SMEFT) in the Warsaw basis and massive on-shell amplitudes. As a first step, we focus on the electroweak sector without fermions. We describe the Feynman rules for a particular choice of input scheme and compare them with the 3-point massive ...
Rafael Aoude, Camila S. Machado
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Physical Review D, 2022 We study the modular symmetric standard-model effective field theory. We employ the stringy Ansatz on coupling structure that 4-point couplings $y^{(4)}$ of matter fields are written by a product of 3-point couplings $y^{(3)}$ of matter fields, i.e., $y^{(4)} = y^{(3)}y^{(3)}$.
Tatsuo Kobayashi +3 more
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More synergies from beauty, top, Z and Drell-Yan measurements in SMEFT [PDF]
Journal of High Energy Physics, 2023 We perform a global analysis of Beauty, Top, Z and Drell-Yan measurements in the framework of the Standard Model effective theory (SMEFT). We work within the minimal flavor violation (MFV) hypothesis, which relates different sectors and generations ...
Cornelius Grunwald +3 more
semanticscholar +1 more source
Non-standard interactions in SMEFT confronted with terrestrial neutrino experiments
Journal of High Energy Physics, 2021 The Standard Model Effective Field Theory (SMEFT) provides a systematic and model-independent framework to study neutrino non-standard interactions (NSIs).
Yong Du +4 more
doaj +1 more source
SMEFT calculations for the LHC [PDF]
Proceedings of The Ninth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2021), 2021 This talk summarizes the status of calculations in the Standard Model Effective Field Theory and gives an overview of the computational techniques that are most commonly employed in order to make predictions for LHC processes in this framework.
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Mapping the SMEFT at high-energy colliders: from LEP and the (HL-)LHC to the FCC-ee [PDF]
Journal of High Energy PhysicsWe present SMEFiT3.0, an updated global SMEFT analysis of Higgs, top quark, and diboson production data from the LHC complemented by electroweak precision observables (EWPOs) from LEP and SLD.
E. Celada +7 more
semanticscholar +1 more source
The Standard Model as an Effective Field Theory [PDF]
, 2018 Projecting measurements of the interactions of the known Standard Model (SM) states into an effective field theory (EFT) framework is an important goal of the LHC physics program.
Brivio, Ilaria, Trott, Michael
core +2 more sources
Froggatt-Nielsen meets the SMEFT
Journal of High Energy PhysicsAbstract We study the matching of Froggatt-Nielsen theories of flavour onto the Standard Model Effective Field Theory (SMEFT), upon integrating out a heavy Beyond-the-Standard-Model (BSM) scalar ‘flavon’ whose vacuum expectation value breaks an Abelian flavour symmetry at energies ΛFN well above the electroweak scale, ΛFN
Eetu Loisa, James Talbert
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