Search for the decay K→πν

1998/06/10 by J. R. Adams, J. Adams, A. Alavi-Harati +86 · 22 citations
Mathematics · Physics and Astronomy · #Astrophysics #Branching fraction #Confidence interval #Event (particle physics) #Fermilab #High-Energy Particle Collisions Research #Limit (mathematics) #Mathematics #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Quantum Chromodynamics and Particle Interactions #Statistics #hep-ex

paper · pdf · doi:10.1016/s0370-2693(98)01593-7

published in Physics Letters B 447(3-4), 240-245 (Elsevier BV) · Documentstyle aps,psfig,prl, 5 pages, 3 figures

arxiv created 1998/06/10 · openalex publication_date 1999/02/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We report on a search for the rare decay K_L -> pi⁰ nu nubar in the KTeV experiment at Fermilab. We searched for two-photon events whose kinematics were consistent with an isolated pi⁰ coming from the decay K_L -> pi⁰ nu nubar. One candidate event was observed, which was consistent with the expected level of background. An upper limit on the branching ratio was determined to be B(K_L -> pi⁰ nu nubar) < 1.6E-6 at the 90% confidence level.

Citations

• Effects of Superheavy Quarks and Leptons in Low-Energy Weak Processes KL-> Formula, K+-> + Formula and K0 Formula0
• CP-Violation in the Renormalizable Theory of Weak Interaction

Cited by

• Search for Light Gluinos via Decays Containingπ+π−orπ0from a Neutral Hadron Beam at Fermilab
• Search for the decayKL→π0νν¯usingπ0→e+e−γ