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23–26 Sept 2025
DESY Hamburg
Europe/Berlin timezone

Hunting coloured scalars with machine learning

25 Sept 2025, 15:00
15m
Main Auditorium (DESY)

Main Auditorium

DESY

Particle Phenomenology Parallel Sessions Thursday Pheno 1

Speaker

Manuel Kunkel (University of Würzburg)

Description

Several extensions of the Standard Model predict scalar states that are charged under QCD colour. Motivated by composite Higgs models, we study an electrically neutral colour octet and a colour sextet with charge 4/3. Both states couple to top quarks such that pair production leads to a four top quark signature. We train neural networks to separate these signal processes from their SM backgrounds and derive the discovery reach and expected exclusion limits at the HL-LHC. We also show that our networks can be used to efficiently identify which state is present.

Primary authors

Jeong Han Kim (Chungbuk National University) Jun Seung Pi (Chungbuk National University) Manuel Kunkel (University of Würzburg) Thomas Flacke (KIAS) Werner Porod (Uni. Würzburg)

Presentation materials