Measurement of the absolute branching ratio of the K + → π + π 0 ( γ ) decay with the KLOE detector The KLOE Collaboration

نویسندگان

  • C. Bacci
  • S. Bocchetta
  • P. Branchini
  • P. Campana
  • F. Ceradini
  • G. Chiefari
  • B. Di Micco
  • P. Franzini
  • E. Gorini
  • E. Graziani
  • W. Kluge
  • F. Lacava
  • P. Massarotti
  • P. Santangelo
  • L. Tortora
  • P. Valente
چکیده

We have measured the absolute branching ratio of the K+ → π+π0 (γ) decay, using ∼20 million tagged K+ mesons collected with the KLOE detector at DAΦNE, the Frascati φ–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+ → π+π0 (γ))=0.2065± 0.0005stat ± 0.0008syst.

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Measurement of the absolute branching ratio of the K + → π + π 0 ( γ ) decay with the KLOE detector

We have measured the absolute branching ratio of the K+ → π+π0 (γ) decay, using ∼20 million tagged K+ mesons collected with the KLOE detector at DAΦNE, the Frascati φ–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+ → π+π0 (γ))=0.2065± 0.0005stat ± 0...

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تاریخ انتشار 2008