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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/100551
A Study of anti-B ---> Xi(c) anti-Lambda-(c) and anti-B ---> anti-Lambda+(c) anti-Lambda-(c) anti-K decays at BABAR
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We report measurements of B-meson decays into two- and three-body final states containing two charmed baryons using a sample of 230×106 Υ(4S)→BB¯¯¯ decays. We find significant signals in two modes, measuring branching fractions B(B−→Λ+cΛ¯¯¯−cK−)=(1.14±0.15±0.17±0.60)×10−3 and B(B−→Ξ0cΛ¯¯¯−c)×B(Ξ0c→Ξ−π+)=(2.08±0.65±0.29±0.54)×10−5, where the uncertainties are statistical, systematic, and from the branching fraction B(Λ+c→pK−π+), respectively. We also set upper limits at the 90% confidence level on two other modes: B(B¯¯¯0→Ξ+cΛ¯¯¯−c)×B(Ξ+c→Ξ−π+π+)<5.6×10−5 and B(B¯¯¯0→Λ+cΛ¯¯¯−cK¯¯¯0)<1.5×10−3. We observe structure centered at an invariant mass of 2.93 GeV/c2 in the Λ+cK− mass distribution of the decay B−→Λ+cΛ¯¯¯−cK−.
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GRAUGÉS POUS, Eugeni, GARRA TICÓ, Jordi and BABAR Collaboration. A Study of anti-B ---> Xi(c) anti-Lambda-(c) and anti-B ---> anti-Lambda+(c) anti-Lambda-(c) anti-K decays at BABAR. Physical Review D. 2008. Vol. D77, num. 031101-1-031101-8. ISSN 1550-7998. [consulted: 12 of August of 2026]. Available at: https://hdl.handle.net/2445/100551