19 June 2026
Institute of Physics
Europe/Prague timezone

Testing Lepton Flavour Universality with Rare Kaon Decays at NA62

19 Jun 2026, 16:10
20m
Dvorak Lecture Hall (Institute of Physics)

Dvorak Lecture Hall

Institute of Physics

Pod Vodárenskou věží 2531/3, 182 00 Praha 8

Speaker

Marjan Cirkovic (Charles University (CZ))

Description

The NA62 experiment at CERN is a fixed-target experiment located in the North Area of the SPS accelerator complex.
Its primary goal is the precise measurement of the ultra-rare kaon decay K+→π+ννˉ,
one of the most sensitive probes of physics beyond the Standard Model.

During Run 1 and the ongoing Run 2 data-taking periods, NA62 has collected an unprecedented sample of charged kaon decays,
enabling measurements with very small statistical uncertainties. In addition to its flagship programme, the experiment provides unique opportunities
for precision studies of rare kaon decays involving charged leptons, such as K+→π+ℓ+ℓ− decays.

The Prague NA62 group is pursuing a precision measurement of these decay modes with the ultimate goal of testing Lepton Flavour Universality.
This talk will present the current status of the analysis and discuss the expected sensitivity and projected results using the full NA62 data set.

Presentation materials