Iain Bertram (Lancaster University)
We present a first study of the inclusive production of the X(4140) state in hadronic collisions. We report the X(4140) production rate and a new measurement of its mass and width. The results of searches for the Zb(10610) and the Zb(10650) using the decay Zb → Υ(nS)π± where Upsilon(nS) → μμ are also presented. Sensitivity to the production of Zb is demonstrated. We present a measurement of the forward-backward asymmetry in the production of B± mesons, Λb baryons and Λ baryons. Nonzero asymmetries would indicate a preference for a particular flavor, e.g., b quark or b antiquark, to be produced in the direction of the proton beam. These measurements provide important constraints on the production mechanisms of heavy quarks at hadron colliders. These studies are based on 10.4 fb−1 of pp~ collision data collected by the D0 experiment at the Fermilab Tevatron collider.