Measurement of Gamma(Ks -> pi+pi-gamma)/Gamma(Ks -> pi0pi0)

Details Measurement of Gamma(Ks -> pi+pi-gamma)/Gamma(Ks -> pi0pi0) Measurement of Gamma(Ks -> pi+pi-gamma)/Gamma(Ks -> pi0pi0)

2002-04-18

arxiv.org/abs/hep-ex/0204024v1

Phys.Lett.B538:21-26,2002

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages, 2 Encapsulated Postscript figures. Submitted to Phys. Lett. B

Scientific paper

We have measured the ratio R=Gamma(Ks -> pi+pi-gamma)/Gamma(Ks -> pi0pi0) with the KLOE detector at the DAFNE e+e- collider. This measurement is fully inclusive with respect to the pi+pi-gamma final state. The sample of over 10^6 two-pion decays of tagged Ks mesons allows a statistical error as low as 0.1% to be obtained. The accuracy is limited by systematic uncertainties, which are estimated primarily from data. We find R=2.236 +/- 0.003(stat) +/- 0.015(syst).

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