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T: Fachverband Teilchenphysik

T 94: Flavour Physics VI

T 94.5: Vortrag

Freitag, 4. April 2025, 10:00–10:15, VG 1.104

Dalitz analysis on B⁺ −> K_S⁰ π⁺ π⁰ — •Oskar Tittel, Stefan Wallner, Hans-Günther Moser, and Markus Reif — Max-Planck Institut für Physik, München

The Belle II experiment in Tsukuba, Japan, is working at the high-intensity frontier of the search for physics beyond the Standard Model (SM). A direct test of the SM is the verification of the so-called "isospin sum-rule" in the B → K^*π system, which depends on the branching fractions (BF’s) and the direct CP asymmetries of all B → K^*π decay modes. These quantities can be extracted from Dalitz analyses on the decay channels B⁰ → K⁺ π⁻ π⁰ and B⁺ → K_S⁰ π⁺ π⁰.

I will present the Belle II experiment, introduce the isospin sum rule and show the current state of the analysis on B⁺ → K_S⁰ π⁺ π⁰.

Keywords: Dalitz; CP-violation; Flavor physics; Belle 2