EERAD3: Event shapes and jet rates in electron–positron annihilation at order αs3

2014/02/17 by A. Gehrmann–De Ridder, A. Gehrmann-De Ridder, T. Gehrmann +3
Physics and Astronomy · #Annihilation #Electron #Electron–positron annihilation #Event (particle physics) #Hadron #High-Energy Particle Collisions Research #Jet (fluid) #Nuclear physics #Observable #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Parton #Philosophy #Physics #Positron #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Scroll #hep-ph

paper · pdf · doi:10.1016/j.cpc.2014.07.024

17 pages, the source code of the program can be downloaded from http://eerad3.hepforge.org

arxiv created 2014/02/17 · openalex publication_date 2014/08/11 · arxiv updated 2015/06/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The program EERAD3 computes the parton-level QCD contributions to event shapes and jet rates in electron–positron annihilation to order α s 3 . For three-jet production and related observables, this corresponds to next-to-next-to-leading order corrections, and allows for precision QCD studies. We describe the program and its usage in detail. Program summary Program title: EERAD3 Catalogue identifier: AEUC_v1₀ Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEUC_v1₀.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: GNU General Public License, version 3 No. of lines in distributed program, including test data, etc.: 119253 No. of bytes in distributed program, including test data, etc.: 1368922 Distribution format: tar.gz Programming language: FORTRAN77 (with some FORTRAN90 features). Computer: All. Operating system: All. Has the code been vectorised or parallelised?: Program code allows the storage and adaptation of Monte Carlo information for producing statistically independent results on many cores. A tool for the combination of these is provided with the code. RAM : 6 MBytes Classification: 11.2, 11.5. Nature of problem: Computation of second-order QCD corrections to event shapes and jet cross sections in electron–positron annihilation. Solution method: Generation of events at parton-level, supplemented by a subtraction method to combine infrared singular contributions among different partonic channels. Running time: The high-precision/high-resolution distributions in [1] required about 700 CPU-days on an Intel Q6800 2.9 GHz. Reasonable precision can be obtained with run times of about 100 hours per coefficient for distributions, or within 5 hours if only single moments are computed. References: [1] A. Gehrmann-De Ridder, T. Gehrmann, E.W.N. Glover and G. Heinrich, JHEP 0712 (2007) 094 [ arXiv:0711.4711 ].

Citations

• NNLO corrections to event shapes in e⁺e^- annihilation
• Determination of the strong coupling αS from hadronic event shapes with O(\ensuremath α _\mathrm S³) and resummed QCD predictions using JADE data
• The infrared structure ofe+e−→ 3 jets at NNLO reloaded
• The two-loop QCD matrix element for e+e−→3 jets
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• Next-to-Next-to-Leading Order Corrections to Three-Jet Observables in Electron-Positron Annihilation
• Event shapes and jet rates in electron-positron annihilation at NNLO
• Moments of event shapes in electron-positron annihilation at next-to-next-to-leading order
• Numerical evaluation of two-dimensional harmonic polylogarithms
• Numerical evaluation of harmonic polylogarithms
• NNLL Resummation for Jet Broadening
• Resummation of heavy jet mass and comparison to LEP data
• Harmonic Polylogarithms
• NNLO corrections to two-jet observables in electron-positron annihilation
• The one-loop QCD corrections for