Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 64: Flavor Physik II

T 64.4: Talk

Wednesday, March 21, 2018, 17:15–17:30, Z6 - SR 2.006

Measurement of K⁺ → π⁺ ν ν with the NA62 experiment — •Radoslav Marchevski — JGU, 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 signal expectation for the 2016 dataset will be presented.