26-30 July 2021
Zoom
Europe/Berlin timezone

New measurement of radiative decays $K^{+} \to e^{+}\nu\gamma$ and $K^{+} \to \pi^{0}e^{+}\nu\gamma$ at the NA62 experiment

29 Jul 2021, 10:00
15m
Zoom

Zoom

Speaker

Francesco Brizioli (INFN Perugia)

Description

The NA62 experiment at CERN reports new results from studies of radiative kaon decays 𝐾+→𝑒+𝜈𝛾 (𝐾𝑒2𝛾) and 𝐾+→𝜋0𝑒+𝜈𝛾 (𝐾𝑒3𝛾), using a data sample recorded in 2017--2018. The sample comprises O(10k) 𝐾𝑒2𝛾 candidates and O(100k) 𝐾𝑒3𝛾 candidates with sub-percent background contaminations. Preliminary results with the most precise measurement of the 𝐾𝑒2𝛾 and 𝐾𝑒3𝛾 branching ratios, determination of structure-dependent 𝐾𝑒2𝛾 form factors, and T-asymmetry measurement in the 𝐾𝑒3𝛾 decay, are presented.

Primary author

Francesco Brizioli (INFN Perugia)

Presentation Materials