Results 11 to 20 of about 1,160 (154)
Custodial symmetry violation in the SMEFT [PDF]
Physical Review D, 2021 35 pages + appendices, 7 ...
Graham D. Kribs +3 more
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SMEFT atlas of ∆F = 2 transitions [PDF]
Journal of High Energy Physics, 2020 We present a model-independent anatomy of the ∆F = 2 transitions K 0 − K ¯ 0 $$ {\overline{K}}^0 $$ , B s,d − B ¯ s , d $$ {\overline{B}}_{s,d} $$ and D 0 − D ¯ 0 $$ {\overline{D}}^0 $$ in the context of the Standard Model Effective Field Theory (SMEFT).
Jason Aebischer +3 more
doaj +2 more sources
SMEFT at NNLO+PS: Vh production
Journal of High Energy PhysicsIn the context of the Standard Model effective field theory (SMEFT) the next-to-next-to-leading (NNLO) QCD corrections to the Higgsstrahlungs (Vh) processes in hadronic collisions are calculated and matched to a parton shower (PS).
Rhorry Gauld, Ulrich Haisch, Luc Schnell
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Loop counting matters in SMEFT
SciPost Physics, 2023 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).
Gerhard Buchalla, Gudrun Heinrich, Christoph Müller-Salditt, Florian Pandler
doaj +5 more sources
ALP — SMEFT interference [PDF]
Journal of High Energy Physics, 2021 Abstract The Standard Model Effective Field Theory (SMEFT) offers a powerful theoretical framework for parameterizing the low-energy effects of heavy new particles with masses far above the scale of electroweak symmetry breaking. Additional light degrees of freedom extend the effective theory.
Galda, Anne Mareike +2 more
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, 2020 In this work we address three questions: can we successfully describe (observed) deviations from the standard model in the SMEFT language? Can we learn something about the underlying, beyond the standard model, physics using the SMEFT language? If no deviation is observed, how to proceed?
A. David, Giampiero Passarino
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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.
Vincenzo Cirigliano +5 more
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From models to SMEFT and back? [PDF]
SciPost Physics, 2022 We present a global analysis of the Higgs and electroweak sector, in the SMEFT framework and matched to a UV-completion. As the UV-model we use the triplet extension of the electroweak gauge sector. The matching is performed at one loop, employing functional methods. In the SFitter analysis, we pay particular attention to theory uncertainties
Brivio, Ilaria +7 more
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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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Two‐to‐Two Processes at an Electron‐Muon Collider
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 Based on a recent proposal to build an electron‐muon collider, we study two‐to‐two production processes e−μ+⟶ff¯, γγ that originate from dimension 6 and 8 operators. We compare the sensitivity to those effective couplings obtained at the collider with that of low energy measurements of μ⟶eγ, μ⟶ee¯e, and μ⟶e conversion that have recently been reported ...
Antonio O. Bouzas +2 more
wiley +1 more source