Periodic Reporting for period 2 - InterLeptons (A search for new interactions at Belle II using leptons)
Reporting period: 2022-05-01 to 2023-10-31
Since we know that the standard model fails to explain a number of observed phenomena (such as gravity, dark matter, dark energy, etc.), we know that new physics must exist. In the initial phase, we have set up the tools and prepared a few measurements that are related to potential physics beyond the standard model, in particular the search for a new Z' boson decaying invisibly and produced in association with muons at the Belle II experiment. The group also search for the breaking of the standard model via searching for tension between theoretical predictions and precision experimental measurements of quantities that are related to the lepton universality of the couplings of weak interactions. The overall objective of the InterLeptons project is to discover new physics related to dark matter or lepton universality, or severely constrain the parameter space and eventually rule out beyond standard model theories.