https://doi.org/10.1140/epjc/s10052-023-11537-4
Regular Article - Theoretical Physics
Fat b-jet analyses using old and new clustering algorithms in new Higgs boson searches at the LHC
1
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
Received:
14
March
2023
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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