Measurement of the forward-backward asymmetry in Λb⁰ and Λb⁰ baryon production in p p collisions at √ s =1.96 TeV

الأصل · EN

We measure the forward-backward asymmetry in the production of Λb⁰ and Λb⁰ baryons as a function of rapidity in p p collisions at √ s =1.96 TeV using 10.4 fb⁻¹ of data collected with the D0 detector at the Fermilab Tevatron collider. The asymmetry is determined by the preference of Λb⁰ or Λb⁰ particles to be produced in the direction of the beam protons or antiprotons, respectively. The measured asymmetry integrated over rapidity y in the range 0.1<|y|<2 is A=0.04 ± 0.07 (stat) ± 0.02 (syst).