Search for \bar{B}^0 →Λ_c^+\bar{Λ}_c^- decay at Belle

We search for the doubly charmed baryonic decay \bar{B}^0 →Λ_c^+\bar{Λ}_c^-, in a data sample of 520×106 B\bar{B} events accumulated at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. We find no significant signal and set an upper limit of B(\bar{B}^0 →Λ_c^+\bar{Λ}_c^-)< 6.2×10^{-5} at 90% confidence level. The result is significantly below a naive extrapolation from B(B^-→　Ξ\begin0\c\end\bar{Λ}_c^-) assuming a simple Cabibbo-suppression factor of |V_cd/V_cs|^2. The small branching fraction may be attributed to a suppression due to the large momentum of the baryonic decay products, which has been observed in other charmed baryonic two-body B decays.journal articl

Evidence for Direct CP Violation in B0→K+π-Decays

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Increasing fusogenicity of selected variants during selection of the pMSCV-Clontech-X3 library

<p><b>Copyright information:</b></p><p>Taken from "Fusoselect: cell–cell fusion activity engineered by directed evolution of a retroviral glycoprotein"</p><p>Nucleic Acids Research 2006;34(5):e41-e41.</p><p>Published online 15 Mar 2006</p><p>PMCID:PMC1408311.</p><p>© The Author 2006. Published by Oxford University Press. All rights reserved</p> Transduced NIH-3T3 cells from each selection cycle were co-cultivated with GLVR1 HEK-293T cells. The stringency of the selection was increased with ongoing cycles by decreasing the time available for cell-to-cell fusion. Syncytia formation was analyzed under the light-microscope at 200-fold magnification. Multinucleated cells are labeled by white lines