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.
Franzosi, D.B., Fabbri, F., Schumann, S. (2018). Constraining scalar resonances with top-quark pair production at the LHC. JOURNAL OF HIGH ENERGY PHYSICS, 2018(3), 0-28 [10.1007/JHEP03(2018)022].
Constraining scalar resonances with top-quark pair production at the LHC
Fabbri, Federica;
2018
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
