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T: Fachverband Teilchenphysik

T 84: Flavour Physics

T 84.1: Vortrag

Donnerstag, 24. März 2022, 16:15–16:30, T-H15

Tagged analysis of B → X_u ℓ ν at Belle — •Armindokht Afsharipour, Florian Bernlochner, Jochen Dingfelder, Svenja Granderath, Peter Lewis, and Rieka Rittsteiger — Physikalisches Institut, Universität Bonn

We present a study of the exclusive charmless semileptonic decays, B → X_u ℓ ν, where X_u=π⁰, η, η′ and ℓ is an electron or a muon, with the Belle experiment at the SuperKEKB collider in Japan. In the Belle experiment, electrons and positrons are collided at the center-of-mass energy equal to the mass of the Υ(4S) resonance, which decays to pairs of B mesons. One of the two B mesons can be fully reconstructed in a hadronic decay mode (hadronic B tagging) using the Full Event Interpretation algorithm. The signal B meson is then reconstructed from the remaining particles (hadrons and leptons) formed from the unassigned tracks and neutral clusters in the event. In this talk, the general analysis strategy and status of the B → X_u ℓ ν analysis using hadronic B-tagging in Belle is presented.