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1. Estimation of wrong flavor tag fraction and Δt resolution by B0 → J/ψK∗0(→ K+π−) mode at Belle II(in Japanese):(日本語原題)Belle II 実験におけるB0 → J/ψK∗0(→ K+π−)モードを用いたフレーバー誤認率とΔt 分解能の評価  / Aimi Kusudo ; Kenkichi Miyabayashi [BELLE2-MTHESIS-2022-025] Presented on 10 02 2022 MSc
Nara Women's University / Nara
B0 → J/ψK∗0(→ K+π−)モードのシミュレーション事象サンプルを用いて、フレーバータグ誤認率を調べ、effective tagging efficiencyを0.3220±0.0020と得た。分解能をtriple Gaussianで表現するモデルを用いてΔt分布をフィットして得たBメソン寿命は1.532 ± 0.004 psで、入力値と無矛盾であることから問題になるバイアスはないことを確かめた。
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