Measurement of Rare Kaon Decay K⁺ -> PI⁺NUNU-BAR

2002/05/13 by Shaomin Chen, Chen, Shaomin
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0205031

Contributed to the XXXVIIth Rencontres de Moriond session for Electroweak Interactions And Unified Theories

arxiv created 2002/05/13 · arxiv updated 2009/11/30

Abstract

A decade long search for the rare kaon decay to pi⁺nunu-bar has been pursued by E787. Two signal events are observed, giving a measurement of the branching ratio Br(K⁺ -> PI⁺NUNU-BAR)=1.57⁺1.75_-0.82 x 10^-10 and a constraint on the Cabibbo-Kobayashi-Maskawa (CKM) matrix element 0.007<|Vtd|<0.030 (68% C.L.).

Related

• Recent Results from the BNL E787 Experiment
• Status of the Study of the Rare Decay K⁺ → π⁺ ννat BNL
• Rare decays at the CERN high-intensity kaon beam facility
• Rare Kaon Decays: Progress and Prospects
• Measuring The Rare Decays K⁺→ π⁺ νν and K⁰_L → π⁰ νν