# ICHEP 2022

Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

## Search for non-resonant di-Higgs production in the bbbb final state at 13 TeV with the ATLAS experiment

Jul 8, 2022, 7:05 PM
1h 25m
Bologna, Italy

#### Bologna, Italy

Palazzo della Cultura e dei Congressi
Poster Higgs Physics

Shota Hayashida

### Description

The result of search for non-resonant di-Higgs production in the $bbbb$ final state using full Run-2 dataset of proton-proton collisions at $\sqrt{s}$=13 TeV with the ATLAS detector is presented. The $bbbb$ final state is one of the most sensitive channels for measuring the Higgs self-coupling and di-Higgs production cross-section, thanks to the highest branching ratio. The analysis utilizes a novel neural network to estimate the large QCD backgrounds, and employs analysis categorizations to improve the sensitivity to di-Higgs production. This poster will present the analysis strategy and the latest result of the observed (expected) upper limits on the SM HH production cross-section and the constraint on the Higgs self-coupling at a 95% confidence in this analysis.

In-person participation Yes

### Primary authors

Osamu Jinnouchi (Tokyo Institute of Technology)