Recent Results from the KTeV Experiment

2006/06/20 by M. J. Wilking, Wilking, M. J.
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle Accelerators and Free-Electron Lasers #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0606044

Proceedings from Rencontres De Moriond 2006: Electroweak Interactions and Unified Theories

arxiv created 2006/06/20 · openalex publication_date 2006/06/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present recent preliminary results from five decay channels. From the K_L→π⁺π^-γ channel, we extract form factors for the CP violating M1 direct photon emission amplitude and the fraction of the total decay amplitude that is due to direct emission. We have placed an upper limit on the K_L→π⁰π⁰γ branching ratio, and preliminary measurements of the K_L→π^±e^∓νe⁺e^- and π⁰→ e⁺e^- branching ratios are presented. Finally, we report measurements of both the branching ratio and the form factor parameters for the decay K_L→ e⁺e^-γ.

Related

• Study of the Decays KL -> pi+ pi- gamma and KL -> pi+ pi- e+ e- at KTeV
• CP- and T-Violation in the Decay K_L -> pi+ pi- e+ e- and Related Processes
• New Rare Decay Results from KTeV
• CP and T Violation in KL -> pi⁺pi^-e⁺e^-
• The Final Measurement of Epsilon'/Epsilon from KTeV