Fisrt observation and study of K± → π±π0e+e decay at the NA48/2 experiment

NA48/2 Collaboration

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A sample of almost 2000 K± → π±π0e+e rare decays with a background contamination below 3% is observed for the first time by the NA48/2 experiment at CERN/SPS. The preliminary branching ratio in the full kinematic region is obtained to be BR(K± → π±π0e+e) = (4.06 ± 0.17) × 106 by analyzing the data set recorded in 3-month NA48/2 run during 2003. The measured value is in agreement with the theoretical prediction within one standard deviation.

Original languageEnglish (US)
Title of host publicationProceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions
EditorsEtienne Auge, Jacques Dumarchez, Jean Tran Thanh Van
PublisherARISF
Pages237-242
Number of pages6
ISBN (Electronic)9782954640075
StatePublished - 2015
Event50th Rencontres de Moriond on QCD and High Energy Interactions 2015 - La Thuile, Italy
Duration: Mar 21 2015Mar 28 2015

Publication series

NameProceedings of the 50th Rencontres de Moriond - 2015 QCD and High Energy Interactions

Conference

Conference50th Rencontres de Moriond on QCD and High Energy Interactions 2015
CountryItaly
CityLa Thuile
Period3/21/153/28/15

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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