article · Physical Review Letters
This research combines multiple searches for Higgs boson pair production using proton-proton collision data collected at 13 TeV with the ATLAS detector. Analysing datasets between 126 and 140 inverse femtobarns, the study establishes an observed upper limit on the pair production rate of 2.9 times the Standard Model prediction, compared to an expected limit of 2.4. In addition, the findings place experimental constraints on the Higgs boson self-coupling modifier and the quartic coupling modifier. The observed 95 percent confidence intervals are set between minus 1.2 and 7.2 for the self-coupling modifier, and between 0.6 and 1.5 for the quartic coupling modifier. Furthermore, the analysis provides the strongest constraints to date on several interaction parameters within Higgs effective field theory, assisting in the search for potential deviations from established physics.
Understanding how Higgs bosons interact with one another helps physicists verify the fundamental laws of nature described by the Standard Model. By establishing tighter limits on particle production rates and couplings, this work narrows the possibilities for new physics, helping global research programmes refine their theoretical models and plan future high-energy experiments.
The abstract does not indicate an application pathway, as it reports fundamental physics discoveries with no direct industrial or commercial use cases stated.
AI-generated from the published abstract. Always read the original work before citing.
This Letter presents results from a combination of searches for Higgs boson pair production using 126-140 fb^{-1} of proton-proton collision data at sqrt[s]=13 TeV recorded with the ATLAS detector. At 95% confidence level (CL), the upper limit on the production rate is 2.9 times the standard model (SM) prediction, with an expected limit of 2.4 assuming no Higgs boson pair production. Constraints on the Higgs boson self-coupling modifier κ_{λ}=λ_{HHH}/λ_{HHH}^{SM}, and the quartic HHVV coupling modifier κ_{2V}=g_{HHVV}/g_{HHVV}^{SM}, are derived individually, fixing the other parameter to its SM value. The observed 95% CL intervals are -1.2<κ_{λ}<7.2 and 0.6<κ_{2V}<1.5, respectively, while the expected intervals are -1.6<κ_{λ}<7.2 and 0.4<κ_{2V}<1.6 in the SM case. Constraints obtained for several interaction parameters within Higgs effective field theory are the strongest to date, offering insights into potential deviations from SM predictions.
This page summarises published work. The authoritative version sits with the publisher.
DOI: 10.1103/physrevlett.133.101801
Is something wrong with this record? Report it or request removal.
Discussion
Have you built on this work, tried to replicate it, or seen it applied in practice? Share what you know. Verified researchers and MARATTO™ domain experts can open a discussion, and any member can reply. Contributions are reviewed before they appear.
No discussion yet. Open the first thread.
New to MARATTO™? Create a free account.
