1–5 Sept 2025
CERN
Europe/Zurich timezone

Neutrino phenomenology from flavor deconstruction

4 Sept 2025, 10:35
5m
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

400
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Talk BSM

Speaker

Andrea Sainaghi (University of Padua)

Description

Flavor deconstruction refers to a framework where the three fermion families are charged under non-universal gauge groups. Such Standard Model extensions have been proven to be capable of explaining flavor hierarchies among charged fermions. Recently, it has been shown that also neutrino anarchy can be realized within flavor-deconstructed models exploiting a seesaw mechanism. The present work aims to investigate the phenomenological implications of flavor deconstruction in the leptonic sector. In particular, we show that lepton-flavor-violating processes such as µ → eγ, µ → eee and µ-e conversion in nuclei are among the best probes of our scenario. Despite the large number of UV parameters in a general setup, we identify a limited set of combinations relevant to phenomenology. Specifically, we classify flavor-deconstructed models with neutrino anarchy and determine the minimum new-physics scale, Λ, required for their viability. Notably, for certain models, Λ can be as low as a few TeV.

Authors

Andrea Sainaghi (University of Padua) Gino Isidori (University of Zurich (CH)) Nudžeim Selimović (INFN Padova) Prof. Paride Paradisi (University of Padova and INFN)

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