Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 78: Higgs: Extended models

T 78.5: Talk

Thursday, April 2, 2020, 17:30–17:45, H-HS XVI

Lepton selection in the boosted HH→ bbWW^* analysis with √s=13 TeV ATLAS data — •Kira Abeling, Stan Lai, and Jason Veatch — Georg-August-Universität Göttingen

Higgs boson pair production is an important probe for the nature of the Standard Model as it provides a direct measurement of the Higgs potential. Furthermore, many theories predict heavy resonances, X, that can decay into two Higgs bosons which then decay further, in this case, to a b-quark pair and a W boson pair.

Depending on the mass of X, the Higgs bosons are boosted, which results in overlapping decay products that are difficult to resolve. These effects can be counteracted by using larger jet sizes to collect all Higgs decay products in a single object.

In the case that one of the W bosons decays leptonically while the other decays hadronically, it is expected that the lepton will be inside or very close to the jet. To fully exploit this unique topology, the leptonic and hadronic components need to be disentangled. This talk presents studies performed to define an optimal lepton selection in the context of the boosted X→ HH→ bb WW^* analysis.