Regular Article - Theoretical Physics
Fat b-jet analyses using old and new clustering algorithms in new Higgs boson searches at the LHC
Department of Physics, School of Engineering and Sciences, SRM University AP, Amaravati, 522240, Mangalagiri, India
2 School of Electronics and Computer Science, University of Southampton, SO17 1BJ, Southampton, UK
3 Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Brehova 78/7, 11519, Stare Mesto, Czechia
4 School of Physics and Astronomy, University of Southampton, SO17 1BJ, Southampton, UK
5 Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
Accepted: 18 April 2023
Published online: 29 April 2023
We compare different jet-clustering algorithms in establishing fully hadronic final states stemming from the chain decay of a heavy Higgs state into a pair of the 125 GeV Higgs boson that decays into bottom-antibottom quark pairs. Such 4b events typically give rise to boosted topologies, wherein pairs emerging from each 125 GeV Higgs boson tend to merge into a single, fat b-jet. Assuming large hadron collider (LHC) settings, we illustrate how both the efficiency of selecting the multi-jet final state and the ability to reconstruct from it the masses of all Higgs bosons depend on the choice of jet-clustering algorithm and its parameter settings. We indicate the optimal choice of clustering method for the purpose of establishing such a ubiquitous beyond the SM (BSM) signal, illustrated via a Type-II 2-Higgs Doublet Model (2HDM).
© The Author(s) 2023
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