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Automated one-loop calculations with GOSAM

Abstract

We present the program package GoSam which is designed for the automated calculation of one-loop amplitudes for multi-particle processes in renormalisable quantum field theories. The amplitudes, which are generated in terms of Feynman diagrams, can be reduced using either D-dimensional integrand-level decomposition or tensor reduction. GoSam can be used to calculate one-loop QCD and/or electroweak corrections to Standard Model processes and offers the flexibility to link model files for theories Beyond the Standard Model. A standard interface to programs calculating real radiation is also implemented. We demonstrate the flexibility of the program by presenting examples of processes with up to six external legs attached to the loop. (orig.)
Authors:
Cullen, Gavin; [1]  Deutsches Elektronen-Synchrotron, Zeuthen; [2]  Greiner, Nicolas; [3]  Max-Planck-Institut fuer Physik, Muenchen (Germany)]; Heinrich, Gudrun; Reiter, Thomas; [4]  Luisoni, Gionata; [5]  Mastrolia, Pierpaolo; [4]  Padua Univ. (Italy). Dipt. di Fisica]; Ossola, Giovanni; [6]  New York City Univ., NY (United States). The Graduate School and University Center]; Tramontano, Francesco [7] 
  1. Edinburgh Univ. (United Kingdom). School of Physics and Astronomy
  2. DESY; Germany
  3. Illinois Univ., Urbana-Champaign, IL (United States). Dept. of Physics
  4. Max-Planck-Institut fuer Physik, Muenchen (Germany)
  5. Durham Univ. (United Kingdom). Inst. for Particle Physics Phenomenology
  6. New York City Univ., NY (United States). New York City College of Technology
  7. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
Publication Date:
Nov 15, 2011
Product Type:
Technical Report
Report Number:
DESY-11-203; CERN-PH-TH-2011-272; MPP-2011-132; LPN-11-63; IPPP-11-72; DCPT-11-144; Edinburgh-2011-32
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B ANTIQUARKS; COMPUTER CALCULATIONS; DIFFERENTIAL CROSS SECTIONS; EFFECTIVE MASS; ELECTRON NEUTRINOS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; FEYNMAN DIAGRAM; G CODES; GLUON-GLUON INTERACTIONS; GLUONS; HADRONS; HIGGS BOSONS; INCLUSIVE INTERACTIONS; JET MODEL; LEPTONIC DECAY; MASS SPECTRA; MULTIPLE PRODUCTION; PAIR PRODUCTION; PHOTON-PHOTON INTERACTIONS; PHOTONS; POSITRONS; PROTON-PROTON INTERACTIONS; QUANTUM CHROMODYNAMICS; QUARK-ANTIQUARK INTERACTIONS; SCATTERING AMPLITUDES; SPARTICLES; STANDARD MODEL; SUPERSYMMETRY; T ANTIQUARKS; TEV RANGE 01-10; THEORETICAL DATA; TRANSVERSE MOMENTUM; W MINUS BOSONS; W PLUS BOSONS; Z NEUTRAL BOSONS
OSTI ID:
21520961
Research Organizations:
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Other: ISSN 0418-9833; TRN: DE12F0015
Availability:
Commercial reproduction prohibited; INIS; OSTI as DE21520961
Submitting Site:
DEN
Size:
67 pages
Announcement Date:
Jan 14, 2012

Citation Formats

Cullen, Gavin, Deutsches Elektronen-Synchrotron, Zeuthen, Greiner, Nicolas, Max-Planck-Institut fuer Physik, Muenchen (Germany)], Heinrich, Gudrun, Reiter, Thomas, Luisoni, Gionata, Mastrolia, Pierpaolo, Padua Univ. (Italy). Dipt. di Fisica], Ossola, Giovanni, New York City Univ., NY (United States). The Graduate School and University Center], and Tramontano, Francesco. Automated one-loop calculations with GOSAM. Germany: N. p., 2011. Web.
Cullen, Gavin, Deutsches Elektronen-Synchrotron, Zeuthen, Greiner, Nicolas, Max-Planck-Institut fuer Physik, Muenchen (Germany)], Heinrich, Gudrun, Reiter, Thomas, Luisoni, Gionata, Mastrolia, Pierpaolo, Padua Univ. (Italy). Dipt. di Fisica], Ossola, Giovanni, New York City Univ., NY (United States). The Graduate School and University Center], & Tramontano, Francesco. Automated one-loop calculations with GOSAM. Germany.
Cullen, Gavin, Deutsches Elektronen-Synchrotron, Zeuthen, Greiner, Nicolas, Max-Planck-Institut fuer Physik, Muenchen (Germany)], Heinrich, Gudrun, Reiter, Thomas, Luisoni, Gionata, Mastrolia, Pierpaolo, Padua Univ. (Italy). Dipt. di Fisica], Ossola, Giovanni, New York City Univ., NY (United States). The Graduate School and University Center], and Tramontano, Francesco. 2011. "Automated one-loop calculations with GOSAM." Germany.
@misc{etde_21520961,
title = {Automated one-loop calculations with GOSAM}
author = {Cullen, Gavin, Deutsches Elektronen-Synchrotron, Zeuthen, Greiner, Nicolas, Max-Planck-Institut fuer Physik, Muenchen (Germany)], Heinrich, Gudrun, Reiter, Thomas, Luisoni, Gionata, Mastrolia, Pierpaolo, Padua Univ. (Italy). Dipt. di Fisica], Ossola, Giovanni, New York City Univ., NY (United States). The Graduate School and University Center], and Tramontano, Francesco}
abstractNote = {We present the program package GoSam which is designed for the automated calculation of one-loop amplitudes for multi-particle processes in renormalisable quantum field theories. The amplitudes, which are generated in terms of Feynman diagrams, can be reduced using either D-dimensional integrand-level decomposition or tensor reduction. GoSam can be used to calculate one-loop QCD and/or electroweak corrections to Standard Model processes and offers the flexibility to link model files for theories Beyond the Standard Model. A standard interface to programs calculating real radiation is also implemented. We demonstrate the flexibility of the program by presenting examples of processes with up to six external legs attached to the loop. (orig.)}
place = {Germany}
year = {2011}
month = {Nov}
}