Next-to-leading order QCD jet production with parton showers and hadronization

Journal Article · Sun Jan 01 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.014022· OSTI ID:20774607

Kraemer, Michael; Mrenna, Stephen; Soper, Davison E ^[1]

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1. Institut fuer Theoretische Physik E, RWTH Aachen, D-52056 Aachen (Germany)

We report on a method for matching the next-to-leading order calculation of QCD jet production in e{sup +}e{sup -} annihilation with a Monte Carlo parton shower event generator (MC) to produce realistic final states. The final result is accurate to next-to-leading order (NLO) for infrared-safe one-scale quantities, such as the Durham 3-jet fraction y{sub 3}, and agrees well with parton shower results for multiscale quantities, such as the jet mass distribution in 3-jet events. For our numerical results, the NLO calculation is matched to the event generator Pythia, though the method is more general. We compare one-scale and multiscale quantities from pure NLO, pure MC, and matched NLO-MC calculations.

• OSTI ID: 20774607
• Journal Information: Physical Review. D, Particles Fields, Vol. 73, Issue 1; Other Information: DOI: 10.1103/PhysRevD.73.014022; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
CASCADE SHOWERS
COMPARATIVE EVALUATIONS
ELECTRON-POSITRON INTERACTIONS
ELECTRONS
INCLUSIVE INTERACTIONS
JET MODEL
MASS DISTRIBUTION
MONTE CARLO METHOD
POSITRONS
QUANTUM CHROMODYNAMICS