First observation of the K+ → π+νν decay with the NA62 experiment

Rosa Ilaria; Bucci Francesca; Latino Giuseppe; Lenti Massimo; Panichi Ilaria; Ruggiero Giuseppe

doi:10.1393/ncc/i2026-26059-6

January 1, 2026

First observation of the K+ → π+νν decay with the NA62 experiment

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Key Points

The research aims to observe the K+ decay into π+ and neutrinos, which has significant implications for understanding fundamental particles.
Conducted the NA62 experiment at CERN over multiple years (2016-2022).
Collected data from three distinct years before resuming operations in 2021.
Combined data across years to achieve the first observation of the decay.
Successfully observed the K+ decay into π+ and neutrinos.
Data was collected up to 2022, indicating ongoing experimental progress.
Operations approved to continue until Long Shutdown 3 in 2026.

Implication

NA62 experiment observes K+ decay to π+ and neutrinos, indicating progress in particle physics.

Abstract

The NA62 experiment at CERN is designed to study the K+ → π+νν̄ decay. After collecting data in 2016, 2017, and 2018, the experiment resumed data taking in 2021 and has received approval for operations until the start of Long Shutdown 3 in 2026. The first observation of the K+ → π+νν̄ decay achieved combining the data collected in 2016-2022 is reported.

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Ilaria et al. (2026) studied this question.

synapsesocial.com/papers/698827670fc35cd7a88462cf https://doi.org/10.1393/ncc/i2026-26059-6

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First observation of the K+ → π+νν decay with the NA62 experiment

Key Points

Implication

Abstract

Discussion

Cite This Study

First observation of the K+ → π+νν decay with the NA62 experiment

Key Points

Implication

Abstract

Discussion

Cite This Study

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