PoS - Proceedings of Science
Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Poster Session
Search for non-resonant di-Higgs production in the $b\bar{b}b\bar{b}$ final state at 13 TeV with the ATLAS experiment
S. Hayashida*  on behalf of the ATLAS Collaboration
Full text: pdf
Pre-published on: October 29, 2022
Published on: June 15, 2023
Results are presented of the search for non-resonant di-Higgs production in the $b\bar{b}b\bar{b}$ final state using the Run-2 dataset of proton-proton collisions at $\sqrt{s}=13$ TeV accumulated with the ATLAS detector. The $b\bar{b}b\bar{b}$ final state is one of the most sensitive channels for measuring the Higgs self-coupling and the di-Higgs production cross-section, thanks to its high branching ratio. The analysis utilizes a novel neural network to estimate the large QCD multijet backgrounds, and employs analysis categorizations to improve the sensitivity to di-Higgs production. The analysis strategy and the latest result of the observed (expected) upper limits on the SM di-Higgs production cross-section and the constraint on the Higgs self-coupling in this analysis are presented.
DOI: https://doi.org/10.22323/1.414.0991
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