Belle II Experiment at SuperKEKB Successfully Records First e+e- Collisions after Major Upgrades: Unlocking the Secrets of Particle Interactions

Belle II resumes operations at CERN

The Belle II experiment at SuperKEKB in Japan has successfully recorded its first e+e- collisions on 20 February after a scheduled long shutdown that began in summer 2022. During this shutdown, several upgrades were made to the facility to better handle the expected increases in luminosity and backgrounds originating from the beams.

One of the main upgrades was the installation of a new vertex detector with a fully implemented pixel detector and an improved beam pipe at the collision point. This will allow researchers to collect more precise data on particle interactions and improve their ability to analyze the properties of B mesons and other particles produced by the SuperKEKB accelerator.

Additionally, enhancements were made to the radiation shielding around the detector and other measures were implemented to improve data-collection performance. These improvements will enable researchers to accumulate a larger dataset over time, which is necessary for their long-term goal of discovering new physics beyond the Standard Model.

The Belle II experiment aims to uncover new phenomena through precise analysis of particle interactions, with a focus on understanding the properties of B mesons and other particles produced by high-energy collisions. With its ambitious goal of accumulating a dataset that is 50 times larger than that of its predecessor, Belle II represents an important milestone in ongoing research efforts at SuperKEKB. Researchers hope that this new data will lead to exciting discoveries in particle physics that could revolutionize our understanding of the universe.

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