Bonn 2020 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 98: Topics in flavor physics
T 98.8: Vortrag
Freitag, 3. April 2020, 12:45–13:00, H-HS XII
Study of inclusive B→ Xu ℓ ν decays at the Belle II experiment — Florian Bernlochner, Lu Cao, Jochen Dingfelder, and •Maximilian Welsch — Universität Bonnn
The absolute value of the CKM matrix element |Vub| can be measured from semileptonic B meson decays into either inclusive or exclusive charmless final states. One of the main challenges in studying inclusive B→ Xu ℓ ν decays is the presence of the much more abundant semileptonic B decays involving b → c transitions. The required phase space cuts to suppress the b → c background lead to difficulties in the calculation of the partial branching fractions, resulting in significantly larger theoretical uncertainties on |Vub|. In this talk, I will present the current status of the measurement of inclusive B → Xu ℓ ν decays with the Belle II experiment.