Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 31: Flavour physics II

T 31.3: Talk

Tuesday, March 16, 2021, 16:30–16:45, Tf

Extending the Full Event Interpretation to the Y(5S) system at Belle — •Moritz Bauer and Pablo Goldenzweig — Karlsruhe Institute of Technology, Karlsruhe, Germany

The Belle experiment has, in addition to the data collected at the Υ(4S) resonance, also collected 121 fb⁻¹ of data at the Υ(5S) resonance. The decay products of this resonance include B_s mesons which present interesting channels to test the standard model. Until now, it has not been possible to apply Belle II’s new B meson tagging algorithm, the Full Event Interpretation (FEI), to the Υ(5S) dataset. This exclusive tagging algorithm uses O(10k) decay channels to recombine final-state particles to B mesons.

This talk presents the development and validation of the FEI at the Υ(5S) resonance.