Measurement of the π0 electromagnetic transition form factor slope

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Authors

Colleges, School and Institutes

Abstract

The NA62 experiment collected a large sample of charged kaon decays in 2007 with a highly efficient trigger for decays into electrons. A measurement of the π0 electromagnetic transition form factor slope parameter from 1.11×10^6 fully reconstructed K±→π±π0D, π0D→e+e−γ events is reported. The measured value a = (3.68±0.57)×10−2 is in good agreement with theoretical expectations and previous measurements, and represents the most precise experimental determination of the slope in the time-like momentum transfer region.

Details

Original languageEnglish
Pages (from-to)38-45
JournalPhysics Letters B
Volume768
Early online date22 Feb 2017
Publication statusPublished - 10 May 2017