Jm. Link et al., Measurement of the relative branching ratio BR(Xi(+)(c) -> p(+)K(-)pi(+))/BR(Xi(+)(c) -> Xi(-)pi(+)pi(+)), PHYS LETT B, 512(3-4), 2001, pp. 277-282
We report the observation of the Cabibbo suppressed decay Xi (+)(c) --> pK(
-)pi (+) using data collected with the FOCUS spectrometer during the 1996-1
997 Fermilab fixed target run. We find a Xi (+)(c) signal peak of 202 +/- 3
5 events. We have measured the relative branching ratios BR(Xi (+)(c) --> p
K(-)pi (+))/BR(Xi (+)(c) --> Xi (-)pi (+)pi (+)) = 0.234 +/- 0.047 +/- 0.02
2 and BR(Xi (+)(c) --> p (K) over bar*(892)(0))/BR(Xi (+)(c) --> pK(-)pi ()) = 0.54 +/- 0.09 +/- 0.05. (C) 2001 Published by Elsevier Science B.V.