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

Abstract

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.

Authors:
; ;  [1];  [2];  [2]
  1. Institut fuer Theoretische Physik E, RWTH Aachen, D-52056 Aachen (Germany)
  2. (United States)
Publication Date:
OSTI Identifier:
20774607
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.73.014022; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Kraemer, Michael, Mrenna, Stephen, Soper, Davison E., Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500, and Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403. Next-to-leading order QCD jet production with parton showers and hadronization. United States: N. p., 2006. Web. doi:10.1103/PhysRevD.73.014022.
Kraemer, Michael, Mrenna, Stephen, Soper, Davison E., Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500, & Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403. Next-to-leading order QCD jet production with parton showers and hadronization. United States. doi:10.1103/PhysRevD.73.014022.
Kraemer, Michael, Mrenna, Stephen, Soper, Davison E., Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500, and Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403. Sun . "Next-to-leading order QCD jet production with parton showers and hadronization". United States. doi:10.1103/PhysRevD.73.014022.
@article{osti_20774607,
title = {Next-to-leading order QCD jet production with parton showers and hadronization},
author = {Kraemer, Michael and Mrenna, Stephen and Soper, Davison E. and Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 and Institute of Theoretical Science, University of Oregon, Eugene, Oregon 97403},
abstractNote = {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.},
doi = {10.1103/PhysRevD.73.014022},
journal = {Physical Review. D, Particles Fields},
number = 1,
volume = 73,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}