Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 56: Experimental methods III

T 56.3: Talk

Wednesday, April 1, 2020, 17:00–17:15, H-ÜR 1

Data-driven Continuum Monte Carlo Corrections for Belle and Belle II — •Lena Feld¹, Florian Bernlochner², Pablo Goldenzweig¹, and Markus Prim¹ for the Belle II collaboration — ¹Karlsruher Institut für Technologie — ²Rheinische Friedrich-Wilhelms-Universität Bonn

The Belle and Belle II experiments record BB decays at the Y(4S) resonance. For background determination, continuum data without B meson decays is recorded 60 MeV below the resonance. We present a method to improve the simulation of the continuum in a data-driven way. For this purpose, a multivariate classifier is trained to distinguish the Monte Carlo prediction from the continuum data. The classification is used to reweight the individual events of the Monte Carlo prediction. We present early studies on the improvability of the continuum Monte Carlo sample.