Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 84: Methods in particle physics 5 (tagging)
T 84.8: Talk
Thursday, March 7, 2024, 17:45–18:00, Geb. 20.30: 2.066
Soft Secondary Vertex tools for the ATLAS experiment — Diptaparna Biswas1, •Beatrice Cervato1, Markus Cristinziani1, Carmen Diez Pardos1, Ivor Fleck1, Arpan Ghosal1, Gabriel Gomes1, Jan Joachim Hahn1, Vadim Kostyukhin1, Nils Krengel1, Buddhadeb Mondal1, Stefanie Müller1, Katharina Voss1, Wolfgang Walkowiak1, Adam Warnerbring1, and Tongbin Zhao1,2 — 1Experimentelle Teilchenphysik, Center for Particle Physics Siegen, Universität Siegen — 2Shandong University, China
Several interesting physics processes lead to the production of low-energy (soft) b-quarks in the final state, that may fragment into b-hadrons without the creation of a reconstructable jet. Moreover, b-hadrons in jets are sometimes so soft that their decay products are distributed wider than the standard jet cone (the typical cone Δ R is about 0.4). The tools described in this contribution are targeting secondary vertices which are not detectable by standard Flavour Tagging algorithms. It is important to develop and optimize such b-tagging tools in order to extend the overall capability to identify b-quarks. In particular, we will describe the performance and the calibration of the tools.
Keywords: soft b-tagging; flavour tagging; ATLAS; SUSY