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Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 96: Higgs: Decay into fermions III

T 96.3: Vortrag

Freitag, 3. April 2020, 11:30–11:45, H-HS X

Improved reconstruction methods for Hbb/cc at future e+e colliders — •Yasser Radkhorrami1,2 and Jenny List11DESY, Hamburg — 2Hamburg University

The reconstruction of b- and c-jets is essential for the physics program of the future e+e colliders. For instance, Hbb is the most frequently occuring decay mode of the Higgs boson and measuring the Hcc decay mode will be possible for the first time at an e+e collider. The presence of semileptonic decays in b- and c-jets causes missing energy due to the undetectable neutrinos. A correction for the missing neutrino energy based on the presence of a lepton in a jet and the reconstructed decay vertex will be presented. In the case of the International Large Detector (ILD) proposed for the International Linear Collider (ILC), the Time Projection Chamber allows to identify kaons and protons by their specific energy loss. As a new component of the reconstruction, it has been studied to use the correct mass of kaons and protons in the track fit. This improves the impact parameter and pT resolution considerably. The impact of these improvements on the vertex reconstruction, the neutrino correction, the jet energy resolution as well as the Higgs mass reconstruction will be investigated.

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