Study of the K+ -> e+ nu e+ e- Decay with the NA62 Experiment

by Anna Fehérkuti (Eötvös U and Wigner RCP, Budapest)

Monday 24 Oct 2022, 10:00 → 11:00 Europe/Budapest

Médiaterem (2. épület)

I joined a study concerning measurements of the branching ratio and the form factors of the rare decay K+ -> e+ nu e+ e- (Ke2ee) with the NA62 experiment.
With the data collected between 2016 and 2021, NA62 has currently a Ke2ee sample, large enough to significantly improve the state of the art. Preliminary studies show that it is possible to reach an almost background-free selection of Ke2ee decays, while maintaining a sizeable amount of signal events. In 2022, new data is being collected with the opportunity to achieve the largest Ke2ee sample in the world, suitable for improving the statistical uncertainty of the branching ratio and the form factors measurements.
I took part in the analysis of the 2017-2018 data sample: with the NA62 framework, producing histograms both with data and Monte Carlo simulations, building a signal selection, statistically interpreting the data and evaluating uncertainties.

Zoom: https://cern.zoom.us/j/67590004845?pwd=TmhMaVpCOFhQZ3RCRUJwVUVMSFV0dz09

Meeting ID: 675 9000 4845
Passcode: 344007

24Oct-Anna_Feherkuti.pdf

report_anna_feherkuti-1.pdf