Results 31 to 40 of about 3,754 (159)
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
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Incorporating doubly resonant $W^\pm$ data in a global fit of SMEFT parameters to lift flat directions [PDF]
, 2016 We calculate the double pole contribution to two to four fermion scattering through $W^{\pm}$ currents at tree level in the Standard Model Effective Field Theory (SMEFT).
Berthier, Laure +2 more
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The European Physical Journal C, 2023 AbstractThis document contains lectures on SMEFT, which is an effective field theory of the degrees of freedom of the Standard Model. The material is at a basic, introductory level, without assuming any prior knowledge of effective field theory techniques.
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Flavour symmetries in the SMEFT [PDF]
Journal of High Energy Physics, 2020 Abstract We analyse how U(3)5 and U(2)5 flavour symmetries act on the Standard Model Effective Field Theory, providing an organising principle to classify the large number of dimension-six operators involving fermion fields. A detailed counting of such operators, at different order in the breaking terms of both these symmetries, is presented.
Faroughy, Darius A +3 more
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Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2017), 2017 5 + 1 pages, 2 figures. Contribution to the proceedings of EPS-HEP 2017, European Physical Society conference on High Energy Physics, 5-12 July 2017, Venice ...
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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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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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Higgs boson production at large transverse momentum within SMEFT: analytical results [PDF]
, 2018 We consider Higgs boson production through gluon fusion at large transverse momentum in hadronic collisions. We present the analytic expressions of the relevant one-loop QCD amplitudes including the effects of the complete set of dimension-six operators.
Grazzini, Massimiliano +2 more
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, 2020 This is the first paper of our systematic efforts on lepton number violating (LNV) hadronic decays in the effective field theory approach. These decays provide information complementary to popular nuclear neutrinoless double-$\beta$ ($0\nu\beta\beta ...
Liao, Yi, Ma, Xiao-Dong, Wang, Hao-Lin
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