A Study of the Decay D0->K+pi-

Details A Study of the Decay D0->K+pi- A Study of the Decay D0->K+pi-

2000-12-20

arxiv.org/abs/hep-ex/0012048v1

Phys.Rev.Lett.86:2955-2958,2001

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, 1 table and 4 figures

Scientific paper

10.1103/PhysRevLett.86.2955

Using a large sample of photoproduced charm mesons from the FOCUS experiment at Fermilab (FNAL-E831), we observe the decay $D^0\to K^+\pi^-$ with a signal yield of $149\pm31$ events compared to a similarly cut sample consisting of $36760 \pm 195$ $D^0\to K^-\pi^+$ events. We use the observed ratio of $D^0\to K^+\pi^-$ to $D^0\to K^-\pi^+$ $(0.404\pm 0.085\pm 0.025)%$ to obtain a relationship between the $D^0$ mixing and doubly Cabibbo suppressed decay parameters.

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