Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 76: Flavourphysik 2

T 76.1: Group Report

Wednesday, March 29, 2017, 16:45–17:05, JUR 490

K⁺ → π⁺ ν ν sensitivity at NA62 with the 2016 data — •Radoslav Marchevski — Johannes Gutenberg University, Mainz, Germany

NA62 is a fixed target experiment at CERN, which operates since 2015 on the 400 GeV proton beam supplied by the CERN SPS accelerator. The main physics task of the experiment is a precise measurement of the rare kaon decay K⁺ → π⁺ν ν using a decay-in-flight technique. In the Standard Model this channel is strongly suppressed to O(10⁻¹⁰) and therefore is very sensitive to new physics, which could modify the decay rate. To measure this rare decay the experiment has to achieve a challenging background suppression of 10¹². The background rejection capabilities as well as the sensitivity using the 2016 data will be presented.