Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 81: Flavour physics IV

T 81.10: Vortrag

Donnerstag, 18. März 2021, 18:15–18:30, Tf

Untagged B0D*+ ν studies with Belle IIFlorian Bernlochner, Lu Cao, Jochen Dingfelder, and •Chaoyi Lyu for the Belle II collaboration — Physikalisches Institut der Rheinischen Friedrich-Wilhelms-Universität Bonn, 53115 Bonn, Germany

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 flavour sector of the Standard Model and to search for new physics. The decay of B0D*+ ν 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, I will present the current status of establishing an untagged measurement of the B0D*+ν branching fraction and form factors using early Belle II data. In addition, I will report on the status of the determination of the slow pion reconstruction efficiency using fully hadronic B-meson decays.

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DPG-Physik > DPG-Verhandlungen > 2021 > Dortmund