Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 89: Experimentelle Methoden 3

T 89.6: Talk

Wednesday, March 29, 2017, 18:00–18:15, JUR 253

Muon Pion Separation for the K⁺ → π⁺ ν ν Measurement at the NA62 Experiment — •Riccardo Aliberti — Johannes Gutenberg University Mainz

The ambitious goal of the NA62 experiment is to achieve a direct measurement of the K⁺ → π⁺ νν branching ratio with an accuracy around 10%. This decay has a theoretical BR of 0.85× 10⁻¹⁰ with a single track detectable: the π⁺.
The main decay channels of charged kaons have rates several orders of magnitude larger than those for the signal. For this reason the presence of a very efficient veto system to reject background events is mandatory.
The discrimination between muons and pions represents one of the central topics for the measurement of the K⁺ → π⁺ νν decay. This talk presents the latest results on the muon pion separation achieved in the NA62 2016 run.