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T: Fachverband Teilchenphysik
T 59: Extended Higgs models II
T 59.2: Talk
Wednesday, March 17, 2021, 16:15–16:30, Ti
Event selection optimization in the X→ SH→ bb WW analysis with √s=13 TeV ATLAS data — •Naman Kumar Bhalla, Kira Abeling, Jason Veatch, and Stan Lai — II. Physikaliches Institut, Georg-August-Universität Göttingen
Pair production of the Higgs boson, H, offers a direct measurement of the Higgs potential and is hence a crucial probe for the nature of the Standard Model. Additionally, many Beyond Standard Model scenarios predict heavy resonances, X, with a possible decay to a pair of Higgs bosons. Furthermore, theories such as the “Two Real Scalar Singlet” extension of the Standard model, predict a possible decay of X into another scalar, S, along with a Higgs Boson. The Higgs boson can further decay into a pair of b-quarks while S, with sufficient mass, can decay into a pair of on-shell W bosons. Here, the case where one W boson decays hadronically and the other W boson decays leptonically is considered.
Depending on the relation between the masses of the two additional scalars, mX and mS, the kinematic properties of the final state products may differ significantly from X→ HH→ bb WW* decays. Hence, the methods used for event selection such as the classification of the jets observed from the hadronic decay of the W boson and those from the decay of the Higgs boson to a pair of b-quarks are investigated and re-optimized for the X→ SH topology. This talk presents studies performed to optimize such event selection techniques.