A Measurement of the Branching Ratios of $D^+$ and $$D^+_s$$ Hadronic Decays to Four-Body Final States Containing a $$K_S$$
We have studied hadronic four-body decays of $D^+$ and $$D^+_s$$ mesons with a $$K_S$$ in the final state using data recorded during the 1996-1997 fixed-target run at Fermilab high energy photoproduction experiment FOCUS. We report a new branching ratio measurement of $$\Gamma(D^+\to K_S K^-\pi^+\pi^+)/\Gamma(D^+\to K_S \pi^+\pi^+\pi^-)=0.0768\pm0.0041\pm0.0032$$. We make the first observation of three new decay modes with branching ratios $$\Gamma(D^+\to K_S K^+\pi^+\pi^-)/\Gamma(D^+\to K_S \pi^+\pi^+\pi^-)=0.0562\pm0.0039\pm0.0040$$, $$\Gamma(D^+\to K_S K^+ K^-\pi^+)/\Gamma(D^+\to K_S \pi^+\pi^+\pi^-)=0.0077\pm0.0015\pm0.0009$$, and $$\Gamma(D^+_s\to K_S K^+\pi^+\pi^-)/\Gamma(D^+_s\to K_S K^-\pi^+\pi^+)=0.586\pm0.052\pm0.043$$, where in each case the first error is statistical and the second error is systematic.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- Contributing Organization:
- FOCUS
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1892194
- Report Number(s):
- FERMILAB-PUB-01-071-E; arXiv:hep-ex/0105031; oai:inspirehep.net:556583
- Journal Information:
- Phys.Rev.Lett., Journal Name: Phys.Rev.Lett. Vol. 87
- Country of Publication:
- United States
- Language:
- English
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