Measurement of the Relative Branching Ratio BR($$\Xi^+_c \to p^+ K^- \pi^+$$) / BR($$\Xi^+_c \to \Xi^- \pi^+ \pi^+$$)
We report the observation of the Cabibbo suppressed decay Ξ c + → pK – π + using data collected with the FOCUS spectrometer during the 1996–1997 Fermilab fixed target run. We find a Ξ c + signal peak of 202±35 events. We have measured the relative branching ratios BR( Ξ + c → pK – π + )/BR( Ξ + c → Ξ – π + π + )=0.234±0.047±0.022 and BR (Ξ + c →p K ⁻* (892) 0 )/ BR (Ξ + c →pK – π + )=0.54±0.09±0.05 .
- 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:
- 1893382
- Report Number(s):
- FERMILAB-PUB-01-025-E; arXiv:hep-ex/0102040; oai:inspirehep.net:553350
- Journal Information:
- Phys.Lett.B, Journal Name: Phys.Lett.B Vol. 512
- Country of Publication:
- United States
- Language:
- English
A measurement of lifetime differences in the neutral D-meson system
|
journal | July 2000 |
Description and performance of the Fermilab E687 spectrometer
|
journal | September 1992 |
Observation of the Cabibbo-Suppressed Decay Ξ c + → pK − π +
|
journal | February 2000 |
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