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Title: | A Study of anti-B ---> Xi(c) anti-Lambda-(c) and anti-B ---> anti-Lambda+(c) anti-Lambda-(c) anti-K decays at BABAR |
Author: | Graugés Pous, Eugeni Garra Ticó, Jordi BABAR Collaboration |
Keywords: | Barions Fraccions Baryons Fractions |
Issue Date: | 2008 |
Publisher: | American Physical Society |
Abstract: | 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−. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevD.77.031101 |
It is part of: | Physical Review D, 2008, vol. D77, p. 031101-1-031101-8 |
URI: | http://hdl.handle.net/2445/100551 |
Related resource: | http://dx.doi.org/10.1103/PhysRevD.77.031101 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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577704.pdf | 2.07 MB | Adobe PDF | View/Open |
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