Measurement of the $D^+$ and $$D^+_s$$ Decays into $K^+ K^- K^+$
We present the first clear observation of the doubly Cabibbo suppressed decay D + → K - K + K + and the first observation of the singly Cabibbo suppressed decay D s + → K - K + K + . These signals have been obtained by analyzing the high statistics sample of photoproduced charm particles of the FOCUS (E831) experiment at Fermilab. We measure the following relative branching ratios: Γ ( D + → K - K + K + )/ Γ ( D + → K - π + π + )=(9.49±2.17±0.22)×10 -4 and Γ(D s + →K - K + K + )/Γ(D s + →K - K + π + )=(8.95±2.12 +2.24 -2.31 )×10 -3 , where the first error is statistical and the second 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:
- 1892276
- Report Number(s):
- FERMILAB-PUB-02-140-E; arXiv:hep-ex/0206049; oai:inspirehep.net:588872
- Journal Information:
- Phys.Lett.B, Journal Name: Phys.Lett.B Vol. 541
- Country of Publication:
- United States
- Language:
- English
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