3 research outputs found
Efeito da aplicação de diferentes fontes e doses de silĂcio, em plantio comercial de Eucalyptus camaldulensis na indução de resistĂȘncia a Glycaspis brimblecombei (Moore) (Hemiptera: Aphididae).
Resumo
Observation of Bs0âJ/ÏK*(892)0 and Bs0âJ/ÏKS0 decays
We report the first observation of two Cabibbo-suppressed decay modes of the Bs0 meson. Using a sample of ppÌ collisions at âs=1.96TeV corresponding to 5.9fb-1 of integrated luminosity collected with the CDF II, the collider detector at the Fermilab Tevatron, we search for new Bs0 decay modes in a sample of events containing J/ÏâÎŒ+ÎŒ - decays. We reconstruct a Bs0âJ/ÏK*(892)0 signal with K*(892)0âK+Ï-, observing a yield of 151±25 events with a statistical significance of 8.0Ï. We also reconstruct a Bs0âJ/ÏKS0 signal with KS0âÏ+Ï-, observing a yield of 64±14 events with a statistical significance of 7.2Ï. From these yields, we extract the branching ratios B(Bs0âJ/ÏK*(892)0)=(8. 3±3.8)Ă10-5 and B(Bs0âJ/ÏK0)=(3.5±0.8) Ă10-5, where statistical, systematic, and fragmentation- fraction uncertainties are included in the combined uncertainty. © 2011 American Physical Society