# ICHEP 2022

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

## Search for Resonant and Non-Resonant VHH Production

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

#### Bologna, Italy

Palazzo della Cultura e dei Congressi
Poster Higgs Physics

### Speaker

Nicholas Kyriacou (University of Michigan)

### Description

Studies of Higgs boson pair production (HH) represent the next crucial step to constraining the Higgs sector and allow the chance to refine measurements of the Higgs boson self-coupling. While previous searches have focused on the HH production in the gluon-gluon and vector-boson fusion modes, this analysis documents a new search, with 139 $\rm fb^{-1}$ of pp collisions at $\sqrt{s}$ = 13 TeV collected by the ATLAS detector in LHC Run 2, for di-Higgs production in the VHH final-state. It searches for both resonant and non-resonant hh production, with only HH to bbbb considered for simplicity, in association with a leptonically decaying vector boson (W or Z). While this process has a lower cross-section than ggF and VBF HH production, it offers a clean final state with relatively small backgrounds, due to the presence of leptons. The analysis benefits from small backgrounds and attempts to set limits for the first time on VHH production. Analysis techniques and expected significance will be presented.

In-person participation Yes