Journal
PHYSICS LETTERS B
Volume 666, Issue 4, Pages 305-310Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2008.07.070
Keywords
e(+)e(-) experiments; kaon decays
Funding
- EURODAPHNE
- German Federal Ministry of Education and Research (BMBF) [06-KA-957]
- German Research Foundation (DFG)
- 'Emmy Noether Programme'
- INTAS
- EU Integrated Infrastructure Initiative HadronPhysics Project [RII3-CT-2004-506078]
- [FMRX-CT98-0169]
- [DE839/1-4]
- [96-624, 99-37]
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We have measured the absolute branching ratio K+ -> pi(+)pi(0)(gamma) decay, using similar to 20 million tagged K+ mesons collected with the KLOE detector at DA Phi NE, the Frascati phi-factory. Signal counts are obtained from the fit of the distribution of the momentum of the charged decay particle in the kaon rest frame. The result, inclusive of final-state radiation, is BR(K+ -> pi(+)pi(0)(gamma)) = 0.2065 +/- 0.0005(stat) +/- 0.0008(syst.) (C) 2008 Elsevier B.V. All rights reserved.
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