First Observation of Inclusive $B$ Decays to the Charmed Strange Baryons $Ξ_{c}^{0}$ and $Ξ_{c}^{+}$

Details First Observation of Inclusive $B$ Decays to the Charmed Strange Baryons $Ξ_{c}^{0}$ and $Ξ_{c}^{+}$ First Observation of Inclusive $B$ Decays to the Charmed Strange Baryons $Ξ_{c}^{0}$ and $Ξ_{c}^{+}$

1997-05-08

arxiv.org/abs/hep-ex/9705005v1

Phys.Rev.Lett.79:3599-3603,1997

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages, postscript file also available through http://w4.lns.cornell.edu/public/CLNS

Scientific paper

10.1103/PhysRevLett.79.3599

Using data collected in the region of the Upsilon(4S) resonance with the CLEO II detector operating at the Cornell Electron Storage Ring CESR, we present the first observation of B mesons decaying into the charmed strange baryons Xi_c0 and Xi_c+. We find 79 +/- 27 Xi_c0 and 125 +/- 28 Xi_c+ candidates from B decays, leading to product branching fractions of BR(Bbar -> Xi_c0 X)BR(Xi_c0 -> Xi- pi+) = (0.144 +/- 0.048 +/- 0.021) x 10^-3 and BR(Bbar -> Xi_c+ X)BR(Xi_c+ -> Xi- pi+ pi+) = (0.453 +/- 0.096 +0.085-0.065) x 10^-3.

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