The 42th Belle II Japan Student Workshop took place at the High Energy Accelerator Research Organization (KEK) on March 10th-11th, 2025. A total of 22 students participated from the fourth-year undergraduate, master, and doctoral courses of universities involved in the Belle II experiment. In this workshop, five students, including three undergraduates and two doctoral students from our laboratory, gave presentations on their dissertation research. The workshop had lively discussions among the attendees and promoted their understanding of each other's research. The titles of the presentations by students from our laboratory are listed below. In the meeting, Ms. Hoshiai won the Best Talk Award based on votes from the participants. Congratulations!!

〈 Graduation thesis presentations 〉
Marina Hoshiai, "Evaluation of the Time Resolution of the MCP Monitor and Consideration of the Optical Properties of the Radiator for the J-PARC Muon \(g-2\)/EDM Experiment."
Takumi Mizuno, "Fundamental Study on Anomaly Detection Muon Trigger Utilizing Machine Learning and brief implementation of FPGA for Long-Lived Particle Search Towards the High-Luminosity LHC-ATLAS Experiment."
Nariha Yoshida, "Test of a compact neural network on Versal AI Engine."

〈 Doctoral thesis presentation 〉
Ryogo Okubo, "Measurement of the time-dependent \(CP\) asymmetry in \(B^{0} \rightarrow \rho^{+}\rho^{−}\) decays and constraint on the CKM angle \(\phi_{2}\) at the Belle II experiment."
Michele Aversano, "Search for \(B^{+} \rightarrow \tau^{+} {\nu}_{\tau}\) decays with a hadronic tagging method at the Belle II experiment."

Students who took part in the 42th Belle II Japan Student Workshop