NA62 experiment at CERN SPS

TL;DR

The NA62 experiment at CERN SPS aims to test the Standard Model and low-energy strong interactions through high-precision measurements of kaon decays, including lepton universality and rare decay modes.

Contribution

This paper presents the detector setup, analysis techniques, and initial results on kaon decay measurements, with a focus on lepton universality and rare decay searches.

Findings

Measurement of the lepton universality ratio $R_K$

Study of the $K^ ightarrow o \pi^ ightarrow \gamma ightarrow \gamma$ decay

Preparation for precise $Br(K^{+} o \pi^{+} u ar{ u})$ measurement

Abstract

The NA62 experiment at SPS is a continuation of the long standing CERN kaon physics program. The high statistics and the unprecedent precision allow to probe the Standard Model and test the description of the strong interactions at low energy. The final results on the the lepton universality test by measuring the ratio $R_K = \Gamma(K^{+}\to e^{+}\nu) / \Gamma(K^{+}\to \mu^{+}\nu)$ and the study of the $K^\pm\to\pi^{\pm}\gamma\gamma $ decay are presented. The major goal of the NA62 experiment is to perform a measurement of the $Br(K^{+} \to \pi^{+} \nu \bar{\nu})$ with a precision of 10% in two years of data taking. The detector setup together with the analysis technique is described.