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We estimate B(B-→Ξc0Λ̄c-)=(2.8±1.1)×10- 3-(5.8±2.3)×10-3 and B(B̄0→Ξc+Λ̄c-)=(0. 9±0.5)×10-3-(7.9±4.1)×10-3 from the measurements of the products B(B-→Ξc0Λ̄c-)•B(Ξc0→Ξ-π+)= (4.8-0.9+1.0±1.1±1.2)×10-5 and B(B̄0→Ξ c+Λ̄c-)•B(Ξc+→Ξ-π+π+)=(9.3-2.8+3.7±1. 9±2.4)×10-5, respectively. Here, we assume B(Ξc0→Ξ- π+)=0.83%-1.74%, and B(Ξc+→Ξ-π+π+)=1.2%-10.1% from B(Ξc+→Ξ0π+)=0.84%-3.93%, based on theoretical predictions (see Table. III of Ref) and a measurement of B(Ξc+→Ξ0π+)/ B(Ξc+→Ξ-π+π+)=0.55±0.16, as they are not measured experimentally. We quote the minimum and maximum estimates to cover the uncertainty in theoretical predictions.
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We estimate B(B-→Ξc0Λ̄c-)=(2.8±1.1)×10- 3-(5.8±2.3)×10-3 and B(B̄0→Ξc+Λ̄c-)=(0. 9±0.5)×10-3-(7.9±4.1)×10-3 from the measurements of the products B(B-→Ξc0Λ̄c-)•B(Ξc0→Ξ-π+)= (4.8-0.9+1.0±1.1±1.2)×10-5 and B(B̄0→Ξ c+Λ̄c-)•B(Ξc+→Ξ-π+π+)=(9.3-2.8+3.7±1. 9±2.4)×10-5, respectively. Here, we assume B(Ξc0→Ξ- π+)=0.83%-1.74%, and B(Ξc+→Ξ-π+π+)=1.2%-10.1% from B(Ξc+→Ξ0π+)=0.84%-3.93%, based on theoretical predictions (see Table. III of Ref) and a measurement of B(Ξc+→Ξ0π+)/ B(Ξc+→Ξ-π+π+)=0.55±0.16, as they are not measured experimentally. We quote the minimum and maximum estimates to cover the uncertainty in theoretical predictions.
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Then, we estimate B(B̄0→Λc+Λ̄c-)=(1. 7±0.5±0.4)×10-4-(3.6±1.1±0.9)×10-4 from B(B-→Ξc0Λ̄c-), and (0.58±0.26±0.15)×10- 4-(4.9±2.2±0.9)×10-4 from B(B̄0→Ξc+Λ ̄c-), by correcting for the phase space factor (p) and the Cabibbo-suppression factor of 5.4%. The second error is due to a uncertainty of B(Λc+→pK-π+). We cite the estimates from B(B- →Ξc0Λ̄c-) in this text, as these give a more restrictive range.
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Then, we estimate B(B̄0→Λc+Λ̄c-)=(1. 7±0.5±0.4)×10-4-(3.6±1.1±0.9)×10-4 from B(B-→Ξc0Λ̄c-), and (0.58±0.26±0.15)×10- 4-(4.9±2.2±0.9)×10-4 from B(B̄0→Ξc+Λ ̄c-), by correcting for the phase space factor (p) and the Cabibbo-suppression factor of 5.4%. The second error is due to a uncertainty of B(Λc+→pK-π+). We cite the estimates from B(B- →Ξc0Λ̄c-) in this text, as these give a more restrictive range.
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For comparison of those data points, we normalize them to the absolute branching fraction B(Λc+→pK-π+)=5.0%. We calculate the errors for F(Ξc0Λ̄c-), F(Σc0p̄), F(Λc+p̄) excluding the uncertainty from the Λc+ absolute branching fraction as these modes decay to final states with one Λc+. On the other hand, we include the error for F(B̄0→Λc+Λ̄c-) as it decays to two Λc's. The error in F(Ξc0Λ̄c-) is taken as half of the variation between B(Ξc0→Ξ-π+)=0.83% and 1.74% for the two most extreme theoretical predictions.
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For comparison of those data points, we normalize them to the absolute branching fraction B(Λc+→pK-π+)=5.0%. We calculate the errors for F(Ξc0Λ̄c-), F(Σc0p̄), F(Λc+p̄) excluding the uncertainty from the Λc+ absolute branching fraction as these modes decay to final states with one Λc+. On the other hand, we include the error for F(B̄0→Λc+Λ̄c-) as it decays to two Λc's. The error in F(Ξc0Λ̄c-) is taken as half of the variation between B(Ξc0→Ξ-π+)=0.83% and 1.74% for the two most extreme theoretical predictions.
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