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Resummation and Simulation of Soft Gluon Effects beyond Leading Color.

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We present new simulation results for high-energy collisions, including color-suppressed terms in quantum chromodynamics (QCD) calculations. These terms significantly impact jet veto cross sections in particle physics.

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Area of Science:

  • High-energy particle physics
  • Quantum Chromodynamics (QCD)
  • Collider physics simulations

Background:

  • Understanding high-energy collisions is crucial for testing the Standard Model.
  • Previous simulations often approximated complex quantum chromodynamics (QCD) effects.
  • Resumming soft gluon effects is important for precise theoretical predictions.

Purpose of the Study:

  • To present initial results of resumming soft gluon effects beyond the leading-color approximation.
  • To introduce and utilize a novel parton branching algorithm for QCD simulations.
  • To investigate the impact of color-suppressed terms on simulation outcomes.

Main Methods:

  • Employing a new parton branching algorithm for all-orders QCD perturbation theory.
  • Simulating high-energy collisions with a focus on soft gluon effects.
  • Systematically including color-suppressed terms within the amplitude evolution algorithm.

Main Results:

  • Demonstrated the capability of the new algorithm to include color-suppressed terms.
  • Observed significant contributions from color-suppressed terms to jet veto cross sections.
  • Provided first results of resumming soft gluon effects beyond the leading-color approximation.

Conclusions:

  • Color-suppressed terms play a substantial role in high-energy collision simulations.
  • The developed parton branching algorithm offers a systematic way to include these important effects.
  • These findings advance the precision of theoretical predictions in quantum chromodynamics.