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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Our results on the search for invisible bosons presented at ICHEP and PASCOS

We are pleased that our searches for an invisible Z' boson, and for an invisible dark Higgs boson, have been presented at ICHEP, a major conference in Bologna in July, and this week at the PASCOS conference in Heidelberg.
We didn't observe any excess of events, but we were able to set the most stringent limits to most of the parameters that we studied. In particular, Thanks to the application of the Punzi-net, the artificial neural network that we designed and proposed last year, we managed to exclude a GeV Z' boson decaying fully invisible as the explanation of the (g-2)µ anomaly. The dark Higgs paper has now been submitted to PRL for publication, and the Z' study paper is now being polished and will be submitted to PRL shortly.
Paul Feichtinger, one of the main contributors to the Punzi-net paper and the Z' boson search, presented the results at PASCOS; his talk slides are available at this link. More will come!

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