Measurement of the Decay Rate of Xi_c^0 --> pK^-K^-pi^+ Relative to Xi_c^0 --> Xi^-pi^+

Details Measurement of the Decay Rate of Xi_c^0 --> pK^-K^-pi^+ Relative to Xi_c^0 --> Xi^-pi^+ Measurement of the Decay Rate of Xi_c^0 --> pK^-K^-pi^+ Relative to Xi_c^0 --> Xi^-pi^+

2003-09-04

arxiv.org/abs/hep-ex/0309020v2

Phys.Rev.D69:052004,2004

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages postscript, also available at http://w4.lns.cornell.edu/public/CLNS, submitted to PRD

Scientific paper

10.1103/PhysRevD.69.052004

Using the CLEOIII detector at CESR, we have measured the branching ratio of the decay Xic0 to pK-K-pi+ relative to Xic0 to Xi- pi+. We find B(Xic0 to pK-K-pi+)/B(Xic0 to Xi-pi+)= 0.35+/-$0.08(stat)+/-0.05(syst). In the resonant substructure of this mode, we find evidence for Xi_c0 decays to p K*(890)K-, and measure B(Xic0 to p K*(890) K^-).B(K*(890) to K-pi+) /B(Xic0 to Xi-pi+)=0.14+/-0.04(stat)+/-0.02(syst) and B(Xic0 to pK-K-pi+)/B(Xic0 to Xi-pi+)=0.21+/-0.05(stat)+/-0.03(syst) for the non-resonant Xic0 decays pK-K-pi+ decays.

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