Study of the decay mode D^0 -> K-K-K+pi+

Details Study of the decay mode D^0 -> K-K-K+pi+ Study of the decay mode D^0 -> K-K-K+pi+

2003-08-21

arxiv.org/abs/hep-ex/0308054v4

Phys.Lett.B575:190-197,2003

Physics

High Energy Physics

High Energy Physics - Experiment

15 pages, 4 figures, to be submitted to Physics Letters B

Scientific paper

10.1016/j.physletb.2003.09.054

Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement of the branching ratio for the Cabibbo-favored decay mode $D^0 \to K^-K^-K^+\pi^+$. From a sample of $143 \pm 19$ fully reconstructed $D^0 \to K^-K^-K^+\pi^+$ events, we measure $\Gamma(D^0 \to K^-K^-K^+\pi^+)/\Gamma(D^0 \to K^-\pi^-\pi^+\pi^+) = 0.00257 \pm 0.00034(stat.) \pm 0.00024(syst.)$. A coherent amplitude analysis has been performed to determine the resonant substructure of this decay mode. This analysis reveals a dominant contribution from $\phi$ and $\bar K^{*0}(890)$ states.

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