Pushing the boundaries of knowledge
"A search for new interactions at Belle II using leptons"

This is the official page of the research team "InterLeptons" at the High Energy Physics Institute of the Austrian Academy of Sciences. The team, led by Dr. Gianluca Inguglia, is funded under the grant agreement nr. 947006 of the Starting Grant award offered by the European Research Council (ERC). The research activities of the team will be described and kept up-to-date on these pages.
The aim InterLeptons is to unveil the new physics nature of the so-called flavor anomalies implementing a bottom-up approach based on the studies of data collected at the Belle II experiment, located in the interaction region
of the Super-KEKB collider. The team focuses on final state events containing leptons and a large amount of missing energy. The results of the searches will be interpreted in terms of low mass dark matter, new forces/interactions, and in terms of lepton flavor violating and lepton flavor non-universal couplings.

InterLeptons brings a significant advancement of a new research area in Austria with the potential of revolutionizing particle physics.


InterLeptons News & Co

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Lepton flavour universality in tau lepton decays, a Hackaton

In the last few days, September 25-27, our group met with our main collaborators involved in the study of tau lepton to discuss the status of the searches and to hack all problems faced in the analyses. Currently together with a group at DESY and the Pargue group, we are performing a precision test of lepton flavour universality in leptonic tau decays using different tagging techniques and in parallel we are also attempting a measurement of Vus, an element of the CKM matrix, using tau decays involving hadrons. The workshop was very useful and we could go into very detailed aspects of all analyses, trying to address and understand all possible systematic sources that might affect our measurement. We think to have a much better understanding and will soon report our findings to the Belle II Collaboration seeking an approval from our colleagues to further proceed our analysis and disclose our findings to the public.

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