Constraining New Physics by Studying Single Top Quark Production
Abstract
This study introduces a beyond the Standard Model framework by adding a charged scalar particle, H_c, analogous to the charged Higgs in the Two-Higgs-Doublet Model (2HDM), but analyzed without the restrictive constraints typically applied in 2HDM scenarios. To assess the impact of H_c on single top quark production, two approaches are taken. First, variations in the production cross-section via the s- and t-channels are examined under different values of the model parameters, compared to the SM predictions. Second, spin correlations are analyzed, focusing on differences in the spin of the mediated particle between the new model and SM in the single top quark production via the s-channel. Within the framework of the simplified phenomenological model considered here, a significant fraction of the parameter space can be constrained by combining the two approaches.
Related
- Search for physics beyond the standard model in four and three top quark production events using proton-proton collisions at √s = 13 TeV
- Top-quark pair production sensitivity to heavy new physics at the FCC-ee
- Effective kinematic variables for searching for dark matter mediators in single top quark production processes
- Observation of an excess at the top quark pair production threshold in the single-lepton channel
- Search for single production of a vector-like B' quark decaying to a top quark and a W boson in the single-lepton final state in proton-proton collisions at √s = 13 TeV
BibTeX
@misc{roknabadi2026constraining,
title = {{Constraining New Physics by Studying Single Top Quark Production}},
author = {Maryam Roknabadi and Saeid Paktinat Mehdiabadi and Seyed Mohammad Reza Tabatabaei},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.37039},
eprint = {2610.37039},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.37039},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Constraining New Physics by Studying Single Top Quark Production
AU - Maryam Roknabadi
AU - Saeid Paktinat Mehdiabadi
AU - Seyed Mohammad Reza Tabatabaei
PY - 2026
DA - 2026/10/27
PB - arXiv
DO - 10.48550/arxiv.2610.37039
UR - https://arxiv.org/abs/2610.37039
AB - This study introduces a beyond the Standard Model framework by adding a charged scalar particle, H_c, analogous to the charged Higgs in the Two-Higgs-Doublet Model (2HDM), but analyzed without the restrictive constraints typically applied in 2HDM scenarios. To assess the impact of H_c on single top quark production, two approaches are taken. First, variations in the production cross-section via the s- and t-channels are examined under different values of the model parameters, compared to the SM predictions. Second, spin correlations are analyzed, focusing on differences in the spin of the mediated particle between the new model and SM in the single top quark production via the s-channel. Within the framework of the simplified phenomenological model considered here, a significant fraction of the parameter space can be constrained by combining the two approaches.
ER -