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CDF_2015_I1388868

Studies of the underlying event at 300, 900 and 1960 GeV with leading charged particles
Experiment: CDF (Tevatron)
Inspire ID: 1388868
Status: VALIDATED
Authors:
• Oreste Tumbarell Aranda
• Hannes Jung (hannes.jung@cern.ch)
• Paolo Gunnellini (paolo.gunnellini@desy.de)
• Andy Buckley (cleaning/integration)
References:
• Phys. Rev. D 92, 092009 (2015)
• arXiv: 1508.05340
Beams: p+ p-
Beam energies: (150.0, 150.0); (450.0, 450.0); (980.0, 980.0) GeV
Run details:
• Minimum bias proton-antiproton collision events at 300, 900 and 1960 GeV. Set particles with c*tau > 10 mm stable.

We study charged particle production in proton--antiproton collisions at 300 GeV, 900 GeV, and 1.96 TeV. We use the direction of the charged particle with the largest transverse momentum in each event to define three regions of $\eta$--$\phi$ space; toward, away, and transverse. The average number and the average scalar pT sum of charged particles in the transverse region are sensitive to the modeling of the underlying event. The transverse region is divided into a MAX and MIN transverse region, which helps separate the hard component (initial and final-state radiation) from the beam-beam remnant and multiple parton interaction components of the scattering.

Source code: CDF_2015_I1388868.cc