Search for exotic particles at NA62

Abstract

NA62 is successfully running in the North Area of the CERN SPS with the main goal of measuring the BR(K+ → π+νν) with 10% accuracy. Owing to the high beam energy and high beam intensity, the long decay volume and the hermetic detector coverage, NA62 also has the opportunity to directly search for a plethora of hidden-sector particles, both in visible or invisible final states. A large variety of searches for hidden sector particles can be performed using kaon decays and broad and rich physics programme is being proposed for the 2021-2023 data taking, including ∼ 1018 protons-on-target (pot) collected when the experiment is operated in dump mode. We will detail the status of the first analysis based on the 2 ×1015 pot already collected in dump mode.