CTD2020: Rescuing VBF Higgs Invisible Events with Novel Vertex Selection

Murtaza Safdari, Maximilian Emanuel Goblirsch-Kolb, Nora Emilia Pettersson, Ariel Gustavo Schwartzman, Valentina Cairo & Graham Richard Lee
ATLAS event reconstruction requires the identification and selection of a hard-scatter (HS) primary vertex among the multiple interaction vertices reconstructed in each event. In Run 3, the HS vertex candidate is selected based on the largest sum of squared transverse momenta over the associated tracks. While this method works very well in events containing hard physics objects within the tracker acceptance, it suffers from low efficiency in final states containing forward and/or low $p_T$ jets,...
1 citation reported since publication in 2020.
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