Heidelberg 2022 – scientific programme
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T: Fachverband Teilchenphysik
T 6: Top Quarks: Production (Exp.) 1
T 6.3: Talk
Monday, March 21, 2022, 16:45–17:00, T-H19
Measurement of W-boson-associated single-top-quark production in boosted lepton-plus-jets final states with CMS — •Christopher Matthies1, Johannes Haller1, Roman Kogler2, and Matthias Schröder1 — 1Institut für Experimentalphysik, Universität Hamburg — 2Deutsches Elektronen-Synchrotron DESY, Hamburg
We present a differential cross section measurement of the associated production of a single top quark and a W boson (tW) in boosted lepton-plus-jets final states in pp collisions at √s = 13 TeV with the CMS experiment. Boosted hadronic decays of both the W boson or the top quark are reconstructed as large-radius jets, using the Heavy Object Tagger with Variable R (HOTVR). Deep learning techniques are employed to discriminate tW from top quark pair production and other background processes. It is shown that a measurement up to a transverse momentum of several hundred GeV of the top quark or associated W boson is feasible, extending the phase space covered by previous measurements considerably.