SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 78: Flavor VII
T 78.5: Vortrag
Mittwoch, 22. März 2023, 18:30–18:45, HSZ/0304
Untagged B0 → D*+ ℓ− νℓ studies with Belle II — Florian Bernlochner, Lu Cao, Jochen Dingfelder, and •Chaoyi Lyu — Physikalisches Institut der Rheinischen Friedrich-Wilhelms-Universität Bonn
The precise determination of the CKM matrix element |Vcb| and semileptonic form factors in B meson decays are important for carrying out precision tests of the flavor sector of the Standard Model and to search for new physics. The decay of B0 → D*+ ℓ− νℓ is particularly well suited to determine |Vcb| due to its large branching fraction, small backgrounds and the availability of lattice data to describe the form factors. In this talk, we will present the measurement of the |Vcb| and form factors in the untagged B0 → D*+ ℓ− νℓ decay as well as the lepton flavor universality tests between electrons and muons using early Belle II data.