May 1, 2024 Bachelor Thesis Closed Access

Li, Haorui

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    <subfield code="a">&lt;p&gt;The Standard Model (SM) successfully describes fundamental particles but fails to explain dark matter (DM). The Belle II experiment searches for new particles like the dark photon &lt;span class="math-tex"&gt;\(A'\)&lt;/span&gt;&amp;nbsp;through electron-positron collisions, for example in the process &lt;span class="math-tex"&gt;\(e^+e^- \to \gamma A', A' \to \mu^+\mu^-\)&lt;/span&gt;. This thesis focuses on using the CATHODE method, which trains a classifier on Monte Carlo (MC) simulations to distinguish signal-like anomalies implying dark photons.&lt;/p&gt;</subfield>
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    <subfield code="a">Search for a Dark Photon with Classifying Anomalies through Outer Density Estimation</subfield>
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