Constraining scalar resonances with top-quark pair production at the LHC

Franzosi, D. B., Fabbri, F. and Schumann, S. (2018) Constraining scalar resonances with top-quark pair production at the LHC. Journal of High Energy Physics, 2018(3), 22. (doi: 10.1007/JHEP03(2018)022)

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Constraints on models which predict resonant top-quark pair production at the LHC are provided via a reinterpretation of the Standard Model (SM) particle level measurement of the top-anti-top invariant mass distribution, m(tt¯) . We make use of state-of-the-art Monte Carlo event simulation to perform a direct comparison with measurements of m(tt¯) in the semi-leptonic channels, considering both the boosted and the resolved regime of the hadronic top decays. A simplified model to describe various scalar resonances decaying into top-quarks is considered, including CP-even and CP-odd, color-singlet and color-octet states, and the excluded regions in the respective parameter spaces are provided.

Item Type:Articles
Additional Information:This work was supported by the European Union through the FP7 training network MCnetITN (PITN-GA-2012-315877) and the Horizon2020 Marie Sklodowska-Curie network MCnetITN3 (722104). Federica Fabbri especially wants to thank MCnetITN for the opportunity to hold a short-term studentship at the II. Institute for Physics at Gottingen University.
Glasgow Author(s) Enlighten ID:Fabbri, Ms Federica
Authors: Franzosi, D. B., Fabbri, F., and Schumann, S.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of High Energy Physics
ISSN (Online):1029-8479
Published Online:06 March 2018
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in Journal of High Energy Physics 2018(3): 22
Publisher Policy:Reproduced under a Creative Commons License

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