Charged Kaons at the Main Injector (CKM)

TL;DR

The CKM collaboration aims to measure the rare K+ decay branching ratio at Fermilab's Main Injector, seeking about 100 events with minimal background to test the Standard Model prediction.

Contribution

Proposes a new experimental approach to measure the rare K+ decay with high precision at Fermilab's Main Injector.

Findings

Targeting approximately 100 decay events

Background reduction to a few events

Potential to test Standard Model predictions

Abstract

The CKM collaboration is proposing to measure the branching ratio of the rare K decay (K+ --> pi+ nu nubar) at the Main Injector at Fermilab. Our goal is to be able to observe about 100 events, for a Standard Model branching ratio of about 1.0E-10. This implies that we must be able to reduce the background to a few events.