Belle II’s First Run: Readying for the Discovery of a Lifetime

Belle II resumes operations at CERN

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

The Belle II experiment, which first recorded collisions in the fully instrumented detector in March 2019, aims to uncover new phenomena through precise analysis of the properties of B mesons and other particles produced by the SuperKEKB accelerator. The long-term goal of Belle II is to accumulate a dataset that is 50 times larger than that of the former Belle experiment. This ambitious goal will allow researchers to delve deeper into the mysteries of particle physics and potentially discover new physics beyond the Standard Model.

With the upgraded detector and improved performance measures in place, researchers are now poised to collect high-quality data that could lead to exciting discoveries in the field of particle physics. The successful start of Run 2 at Belle II marks an important milestone in the ongoing research efforts at the facility.

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