Complete NLO SMEFT Electroweak Corrections to Higgs Decays
Luigi Bellafronte, Sally Dawson, Clara Del Pio, Matthew Forslund, Pier Paolo Giardino
TL;DR
This paper provides comprehensive NLO electroweak corrections to Higgs decay processes within the SMEFT framework, enhancing the precision of BSM physics searches at future colliders.
Contribution
It delivers the complete NLO SMEFT predictions for Higgs decays, including all relevant operators and flavor structures, which was previously unavailable.
Findings
NLO SMEFT corrections significantly improve sensitivity to BSM physics.
Inclusion of SMEFT operators alters Higgs decay predictions.
Enhanced analysis capability for FCC-ee Higgs measurements.
Abstract
Precise predictions for Higgs decays are a crucial ingredient of the search for beyond the Standard Model (BSM) physics and the Standard Model Effective Field Theory (SMEFT) is a valuable tool for quantifying deviations from the Standard Model (SM). We present the complete set of predictions for the 2- and 3- body Higgs decays at next-to-leading order (NLO), considering QCD and electroweak corrections and including all contributions from the dimension-6 SMEFT operators and with an arbitrary flavor structure. Including the NLO SMEFT results for Higgs decays greatly increases the sensitivity to BSM physics of the process at FCC-ee, as compared with that obtained using only the total cross section.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Computational Physics and Python Applications · Quantum Chromodynamics and Particle Interactions