Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 47: CP: Asymmetrie + 2 Neutrinos

T 47.7: Talk

Tuesday, March 10, 2015, 18:15–18:30, L.09.28 (HS 12)

Study of D⁰ → π⁺ π⁻ π⁺ π⁻ at Belle — •Johannes Rauch — Technische Universität München

Singly Cabibbo suppressed decays of charm mesons are expected to show a very small CP asymmetry, if any, in the Standard Model. Therefore, these channels provide a good probe for new physics.

Spectroscopy of various decay channels in multi-hadronic states have seldomly been undertaken in the current era of large data sets provided e.g. by the Belle experiment.

We will present the current status of an analysis of D⁰ → π⁺ π⁻ π⁺ π⁻. Preliminary results of a partial wave analysis, measurements of relative branching fractions, and CP asymmetry will be shown.