Top-Quark Pair Production and Decay in Extended Higgs Sectors
Abstract
Extensions of the Higgs sector in the Standard Model address outstanding questions like the first-order electroweak phase transition and also present a rich collider phenomenology. The two-Higgs-doublet model is a minimal extension of the Standard Model with an extra complex SU(2)L doublet, and consists of an extra scalar, a pseudoscalar and a pair of charged Higgs bosons along with a Standard-Model-like Higgs boson. We present a modified version of the hvq library of the POWHEG-BOX-V2 event generator interfaced with the OpenLoops 2 amplitude generator to obtain predictions for top-quark pair production at NLO accuracy, including top-quark decays with full spin correlations in a framework that extends the SM Higgs sector with an extra heavy scalar and a pseudoscalar. The interference effects between the scalar and pseudoscalar signals, and the Standard Model QCD background are implemented. We include parton showers and hadronisation, and take detector effects into consideration. The status of our work and plans to extend it to future collider projects are discussed.
Related
- Investigating bottom quark effects in Higgs boson pair production
- Two-loop QCD contribution to the quark-initiated production of a top-antitop quark pair and a Higgs boson at the LHC
- Top-Quark Mass Scheme Uncertainties in Higgs Boson Pair Production via Gluon Fusion
- Study of enhancing the signal-background separation for the Higgs boson production in association with a single top-quark in pp collisions at the LHC
- Combined measurements and interpretations of Higgs boson production and decay in proton–proton collisions at s = 13 TeV
BibTeX
@misc{banfi2026topquark,
title = {{Top-Quark Pair Production and Decay in Extended Higgs Sectors}},
author = {Andrea Banfi and Alexander Lind and Jonas M. Lindert and Vishakha Lingadahally},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.08388},
eprint = {2611.08388},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.08388},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Top-Quark Pair Production and Decay in Extended Higgs Sectors
AU - Andrea Banfi
AU - Alexander Lind
AU - Jonas M. Lindert
AU - Vishakha Lingadahally
PY - 2026
DA - 2026/11/05
PB - arXiv
DO - 10.48550/arxiv.2611.08388
UR - https://arxiv.org/abs/2611.08388
AB - Extensions of the Higgs sector in the Standard Model address outstanding questions like the first-order electroweak phase transition and also present a rich collider phenomenology. The two-Higgs-doublet model is a minimal extension of the Standard Model with an extra complex SU(2)_L doublet, and consists of an extra scalar, a pseudoscalar and a pair of charged Higgs bosons along with a Standard-Model-like Higgs boson. We present a modified version of the hvq library of the POWHEG-BOX-V2 event generator interfaced with the OpenLoops 2 amplitude generator to obtain predictions for top-quark pair production at NLO accuracy, including top-quark decays with full spin correlations in a framework that extends the SM Higgs sector with an extra heavy scalar and a pseudoscalar. The interference effects between the scalar and pseudoscalar signals, and the Standard Model QCD background are implemented. We include parton showers and hadronisation, and take detector effects into consideration. The status of our work and plans to extend it to future collider projects are discussed.
ER -