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1.	Feasibility study of dark-photon searches in the single photon plus missing events in e+e- collisions at Belle II. / Ayumi Yabuuchi ; Hisaki Hayashii [BELLE2-MTHESIS-2022-016] Presented on 28 02 2020 MSc 2020 Nara Women's University / Nara, japan We carried out the feasibility study of the dark-photon searches for events where only a single photon is detected, using signal and background Monte-Carlo simulation. [...] Fulltext: PDF; Detailed record - Similar records
2.	Measurement of the pion transition form factor in the single-tag one-pion production process e+e--> e (e) pi^0. / Mirey Aoyama ; Hisaki Hayashii [BELLE2-MTHESIS-2022-015] Presented on 20 02 2021 MSc 2021 Nara Women's University / Nara, Japan This thesis reports the results of the feasibility study of the one-pion production in the single-tag two-photon processes in the e+e- collisions at Belle II [...] Fulltext: PDF; Detailed record - Similar records
3.	Measurement of pion transition form factor by e+e- → e+e-pi0 production at Belle II (written in Japanese) / Mirei Aoyama ; Hisaki Hayashii [BELLE2-MTHESIS-2021-020] Presented on 16 02 2021 MSc 2021 Nara Women's University / Nara 茨城県つくば市の大学共同利用法人エネルギー加器研究機構 KEK で稼働している、高輝度度電子・陽電子加速器（SuperKEKB) と粒子検出器（Belle II 測定器）で収集されたデータを用いて、重心系エネルギー10.6 GeV の高エネルギー電子・陽電子衝突において、終状態に一つの散乱電子と一つのπ0 のみが観測される反応、e+e- → e+e- π0について研究した。。2019年と2020年春に収集したBelle II 実験の初期のデータについて解析した結果、本反応過程が抽出されたことを示す明瞭なπ0 信号を観測することができた。また、そこから導出した微分断面積がQ2 ≈ 10 GeV2 の領域で、先行研究の結果を良く再現することを確認した。また、解析過程で今後改良が必要ないくつかの課題を明確にした。 Fulltext: PDF; Detailed record - Similar records
4.	Search for dark matter with the high luminosity electron-positron collider (written in Japanese) / Ayumi Yabuuchi ; Hisaki Hayashii [BELLE2-MTHESIS-2021-016] Presented on 07 02 2020 MSc 2020 Nara Women's University / Nara 宇宙観測によれば宇宙にはダークマターが多量に存在するとされている。本研究では高輝度電子-陽電子衝突型加速器であるSUperKEKB/Belle IIを用いたダークマターの探索可能性について報告する。研究ではモデルに沿ったシミュレーション事象の生成、測定器シミュレーションおよび事象の解析を実験に沿った形で行い、1光子生成事象において、今後Belle II実験で探索が可能な領域を求めた。 Fulltext: PDF; Detailed record - Similar records
5.	Physics at Super B Factory / T. Aushev ; W. Barte ; A. Bondar ; J. Brodzicka ; et al [KEK Report 2009-12] [arXiv:1002.5012] [BELLE2-REPORT-2016-002] 11 February 2010 This report presents the results of studies that investigate the physics reach at a Super B factory, an asymmetric-energy e+e− collider with a design luminosity of 8×10^35 cm−2s−1, which is around 50 times as large as the peak luminosity achieved by the KEKB collider. [...] Fulltext: PDF; Detailed record - Similar records

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