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.)
Measurement of the absolute branching ratio of the K+ ---> pi+ pi0 (gamma) decay with the KLOE detector.
GORINI, Edoardo;PRIMAVERA, Margherita;
2008-01-01
Abstract
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.)File in questo prodotto:
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