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T: Fachverband Teilchenphysik
T 49: Flavour physics 2
T 49.4: Vortrag
Dienstag, 5. März 2024, 16:45–17:00, Geb. 30.41: HS 4
Amplitude Analysis of —→ K+π−π0 Decays — •Ceren Ay1,2, Markus Reif1, Stefan Wallner1, Thomas Kuhr2, and Hans-Günther Moser1 — 1Max-Planck-Institüte für Physik — 2Ludwig-Maximilians-Universität München
The measurement of branching ratios and CP asymmetries of B meson decays are essential tools for understanding the underlying physics. These measurements are particularly challenging for the decays of B mesons to multi-body hadronic final states, since elaborate amplitude analyses are required to separate and measure the contributions of the interfering resonances in these final states. We perform a Dalitz plot analysis of data recorded by the Belle II experiment to extract these parameters for B0B^0 —→ K+π−π0 decays. As part of this, we investigate the model dependence by studying different parameterizations of amplitude models. We also check the dependence on the initial values of the fit and investigate fit biases. Recent results from these studies will be presented.
Keywords: amplitude analysis; hadronic B decay; Belle II