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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2025-08-21 0:50 |
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Conference: Bucharest University Faculty of Physics 2025 Meeting
Section: Theoretical and Computational Physics, High-Energy Physics, Applied Mathematics
Title:
Status Update on the Measurement of the π⁰→e⁺e⁻ Decay at NA62
Authors:
Petre-Constantin BOBOC (1)
*
Affiliation:
1) Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Str. Reactorului no.30, P.O.BOX MG-6, Magurele, Romania
E-mail
petre.constantin.boboc@cern.ch
Keywords:
precision measurements, kaon decays, pion decays
Abstract:
A sample of π⁰→e⁺e⁻ decay candidates was collected by the NA62 experiment during the 2017 and 2018 data-taking periods. The analysis focuses on identifying signal events in the K⁺→π⁺π⁰ decay chain, with the π⁰ decaying to an electron-positron pair. Due to its rarity and suppression with eight order of magnitudes with regards to π⁰→γγ, this decay may be sensitive to new physics. In this presentation, updated results on the measurement of the branching ratio will be shown, along with a comparison to the previous measurement from the KTeV experiment. The results will also provide a test of the Standard Model theoretical predictions for this decay. In addition, a summary of the systematic and stability checks performed in the analysis will be presented.
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