Study of the Cabibbo-suppressed decay modes D0-->Pi-pi+ and D0-->K-K+

Details Study of the Cabibbo-suppressed decay modes D0-->Pi-pi+ and D0-->K-K+ Study of the Cabibbo-suppressed decay modes D0-->Pi-pi+ and D0-->K-K+

2002-12-23

arxiv.org/abs/hep-ex/0212058v2

Phys.Lett.B555:167-173,2003

Physics

High Energy Physics

High Energy Physics - Experiment

12 pages, 1 Figure, accepted for publication in Phys.Lett.B

Scientific paper

10.1016/S0370-2693(03)00053-4

Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement for the branching ratios of the Cabibbo-suppressed decay modes D0-->Pi-Pi+ and D0-->K-K+. We measured: Gamma(D0-->K-K+)/Gamma(D0-->Pi-Pi+) = 2.81 +/- 0.10(stat) +/- 0.06(syst), Gamma(D0-->K-K+)/Gamma(D0-->K-Pi+) = 0.0993 +/- 0.0014(stat) +/- 0.0014(syst), and Gamma(D0-->Pi-Pi+)/Gamma(D0-->K-Pi+) = 0.0353 +/- 0.0012 (stat) +/- 0.0006(syst). These values have been combined with other experimental data to extract the ratios of isospin amplitudes and the phase shifts for the D-->KK and D-->PiPi decay channels.

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