The Underlying Event in Hard Interactions at the Tevatron pbarp Collider

  title={The Underlying Event in Hard Interactions at the Tevatron pbarp Collider},
  author={Cdf II Collaboration},
For comparison of inclusive jet cross sections measured at hadron-hadron colliders to next-to-leading order (NLO) parton-level calculations, the energy deposited in the jet cone by spectator parton interactions must first be subtracted. The assumption made at the Tevatron is that the spectator parton interaction energy is similar to the ambient level measured in minimum bias events. In this paper, we test this assumption by measuring the ambient charged track momentum in events containing large… 
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