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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Of penguins and searches

We congratulate our colleagues at Belle II who just presented the result of the Belle II search for the rare flavour-changing neutral current process B->Knunu, mediated at the leading order by an electroweak penguin diagram.
The search, reported in a presentation at the EPS conference and simultaneously in a seminar at KEK shows a result indication the first evidence for this process. This evidence is however in tension with standard model prediction at a level of 2.8 sigma, making this result very interesting and exciting.
At HEPHY we are performing this very same search using the data collected by the Belle experiment, which are about twice those available at Belle II, hence we should have more discovery potential and more sensitivity to very same process. Our Belle search could confirm the new physics nature of what Belle II observed or suggest that a statistical fluctuation might play a role. We are glad to be at the forefront of particle physics research and once again congratulate with our Belle II colleagues on the complex analysis and exciting findings.
Link to the presentation

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