The $K^+ \rightarrow \pi^+ \nu \bar{\nu}$ decay in the NA62 experiment at CERN

TL;DR

The NA62 experiment at CERN aims to precisely measure the rare decay $K^+ ightarrow  ightarrow $ to test for new physics beyond the Standard Model, with initial results and strategy outlined.

Contribution

This paper details the experimental setup, motivation, and initial status of NA62's efforts to measure the decay's branching ratio with high precision.

Findings

Experiment aims for 10% measurement accuracy

Initial pilot run conducted within a month

Decay serves as a probe for new physics

Abstract

The main aim of the NA62 experiment at CERN is to study the rare $K^+ \rightarrow \pi^+ \nu \bar{\nu}$ decay and measure its Branching Ratio (BR) with $10%$ precision. Due to its theoretical precision, this decay is an excellent probe to test the presence of New Physics (NP) at the highest scale complementary to LHC. At less than one month from the starting of the NA62 pilot run, the motivations, strategy and status of the experiment are described.