Constraints on anomalous couplings of the Higgs boson from pair production searches

TL;DR

This paper investigates constraints on anomalous Higgs boson couplings through pair production searches using effective field theory, analyzing multiple decay channels with simulated ATLAS detector data.

Contribution

It presents a comprehensive EFT-based analysis of non-resonant Higgs pair production constraints across various decay modes using fast simulation techniques.

Findings

Set exclusion limits on Higgs pair production cross sections

Analyzed multiple decay channels for Higgs pair production

Provided EFT parameter constraints based on simulated data

Abstract

The study of the anomalous non-resonant $HH$ production is presented from the point of view of effective field theory (EFT) parameterization. The searches for $pp \rightarrow HH \rightarrow \gamma \gamma WW$, $pp \rightarrow HH \rightarrow \gamma \gamma bb$ and $pp \rightarrow HH \rightarrow bbbb$ processes by ATLAS experiment at the Large Hadron Collider (LHC) are reproduced. The selection efficiencies and exclusion limits on the $HH$ production cross sections for different Beyond Standard Model (BSM) EFT benchmark models are obtained using the fast Monte-Carlo simulation of the ATLAS detector.