Resonance-aware subtraction in the dipole method

Höche, Stefan; Liebschner, Sebastian; Siegert, Frank

doi:10.1140/epjc/s10052-019-7212-7

Title: Resonance-aware subtraction in the dipole method

Abstract

We present a technique for infrared subtraction in next-to-leading order QCD calculations that preserves the virtuality of resonant propagators. The approach is based on the pseudo-dipole subtraction method proposed by Catani and Seymour in the context of identified particle production. As the first applications, we compute the $e^+e^-$ → $W^+W^-$ $$\bar{bb}$$ and $pp$ → $W^+W^-$ $$j_bj_b$$ cross-section, which are both dominated by top-quark pair production above the threshold. We compare the efficiency of our approach with a calculation performed using the standard dipole subtraction technique.

Authors:

; Liebschner, Sebastian; Siegert, Frank

Publication Date:: 2019-08-30

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1619364

Alternate Identifier(s):: OSTI ID: 1529364

Report Number(s):: arXiv:1807.04348; SLAC-PUB-17299; FERMILAB-PUB-18-764-T; MCNET-18-15
Journal ID: ISSN 1434-6044; 728; PII: 7212

Grant/Contract Number:: AC02-07CH11359; AC02-76SF00515

Resource Type:: Published Article

Journal Name:: European Physical Journal. C, Particles and Fields

Additional Journal Information:: Journal Name: European Physical Journal. C, Particles and Fields Journal Volume: 79 Journal Issue: 9; Journal ID: ISSN 1434-6044

Publisher:: Springer Science + Business Media

Country of Publication:: Germany

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Höche, Stefan, Liebschner, Sebastian, and Siegert, Frank. Resonance-aware subtraction in the dipole method.  Germany: N. p., 2019. 
Web.  doi:10.1140/epjc/s10052-019-7212-7.

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                    Höche, Stefan, Liebschner, Sebastian, & Siegert, Frank. Resonance-aware subtraction in the dipole method.  Germany.  https://doi.org/10.1140/epjc/s10052-019-7212-7

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                    Höche, Stefan, Liebschner, Sebastian, and Siegert, Frank. Fri .  
"Resonance-aware subtraction in the dipole method".  Germany.  https://doi.org/10.1140/epjc/s10052-019-7212-7.

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@article{osti_1619364,

  title        = {Resonance-aware subtraction in the dipole method},

  author       = {Höche, Stefan and Liebschner, Sebastian and Siegert, Frank},

  abstractNote = {We present a technique for infrared subtraction in next-to-leading order QCD calculations that preserves the virtuality of resonant propagators. The approach is based on the pseudo-dipole subtraction method proposed by Catani and Seymour in the context of identified particle production. As the first applications, we compute the $e^+e^-$ → $W^+W^-$ $\bar{bb}$ and $pp$ → $W^+W^-$ $j_bj_b$ cross-section, which are both dominated by top-quark pair production above the threshold. We compare the efficiency of our approach with a calculation performed using the standard dipole subtraction technique.},

  doi          = {10.1140/epjc/s10052-019-7212-7},

  journal      = {European Physical Journal. C, Particles and Fields},

  number       = 9,

  volume       = 79,

  place        = {Germany},

  year         = {2019},

  month        = {8}

}

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Title: Resonance-aware subtraction in the dipole method

Abstract

Citation Formats

NLO QCD corrections to W + W − b b ¯ $$ {W}^{+}{W}^{-} b\overline{b} $$ production with leptonic decays in the light of top quark mass and asymmetry measurements journal, June 2014

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A positive-weight next-to-leading-order Monte Carlo for heavy flavour hadroproduction journal, September 2007

New clustering algorithm for multijet cross sections in e+e− annihilation journal, October 1991

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Heavy-quark correlations in hadron collisions at next-to-leading order journal, April 1992

Physics at the $$e^+ e^-$$ e + e - linear collider journal, August 2015

The dipole formalism for next-to-leading order QCD calculations with massive partons journal, April 2002

A general algorithm for calculating jet cross sections in NLO QCD journal, February 1997

Three-jet cross sections to next-to-leading order journal, May 1996

AMEGIC++ 1.0, A Matrix Element Generator In C++ journal, February 2002

Automating dipole subtraction for QCD NLO calculations journal, December 2007

A theoretical study of top-mass measurements at the LHC using NLO+PS generators of increasing accuracy journal, June 2018

Top quark distributions in hadronic collisions journal, June 1995

Event generation with SHERPA 1.1 journal, February 2009

Hard photon production and matrix-element parton-shower merging journal, February 2010

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The one particle inclusive differential cross section for heavy quark production in hadronic collisions journal, November 1989

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NLO QCD corrections to W + W − b b ¯ $$ {W}^{+}{W}^{-} b\overline{b} $$ production with leptonic decays in the light of top quark mass and asymmetry measurements
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SHERPA 1. , a proof-of-concept version
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QCD corrections to heavy quark production in hadron-hadron collisions
journal, March 1991

A positive-weight next-to-leading-order Monte Carlo for heavy flavour hadroproduction
journal, September 2007

New clustering algorithm for multijet cross sections in e+e− annihilation
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The anti- k _t jet clustering algorithm
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