Evidence for the baryonic decay (B)over-bar(0) -> D-0 Lambda(Lambda)over-bar
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Evidence for the baryonic decay (B)over-bar(0) -> D-0 Lambda(Lambda)over-bar

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Evidence for the baryonic decay (B)over-bar(0) -> D-0 Lambda(Lambda)over-bar

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BABAR Collaboration; Martínez Vidal, Fernando Perfil; Oyanguren Campos, Arantza Perfil; Villanueva Pérez, Pablo
Aquest document és un/a article, creat/da en: 2014
Evidence is presented for the baryonic B meson decay (B) over bar (0) -> (B) over bar (0)Lambda(Lambda) over bar based on a data sample of 471 x 10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric e(+)e(-) collider located at the SLAC National Accelerator Laboratory. The branching fraction is determined to be B((B) over bar (0) -> (B) over bar (0)Lambda(Lambda) over bar) = (9.8(-2.6)(+2.9) +/- 1.9) x 10(-6), corresponding to a significance of 3.4 standard deviations including additive systematic uncertainties. A search for the related baryonic B meson decay (B) over bar (0) -> D-0 Sigma(0)(Lambda) over bar (0) with Sigma(0) -> Lambda gamma is performed and an upper limit B((B)over bar>(0) -> D-0 Sigma(0)(Lambda) over bar + (B)over bar>(0) -> D-0 Lambda(Sigma) over bar (0)) < 3.1 x 10(-5) is determined at 90% confidence level.

    BABAR Collaboration Martínez Vidal, Fernando Oyanguren Campos, Arantza Villanueva Pérez, Pablo 2014 Evidence for the baryonic decay (B)over-bar(0) -> D-0 Lambda(Lambda)over-bar Physical Review D 89 11 112002-1 112002-9
http://dx.doi.org/10.1103/PhysRevD.89.112002
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