Elsevier Science Home
Computer Physics Communications Program Library
Full text online from Science Direct
Programs in Physics & Physical Chemistry
CPC Home

[Licence| Download | New Version Template] aego_v1_0.tar.gz(1091 Kbytes)
Manuscript Title: AutoDipole - Automated generation of dipole subtraction terms
Authors: K. Hasegawa, S. Moch, P. Uwer
Program title: AutoDipole
Catalogue identifier: AEGO_v1_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 181(2010)1802
Programming language: Mathematica and Fortran.
Computer: Computers running Mathematica (version 7.0).
Operating system: The package should work on every Linux system supported by Mathematica. Detailed tests have been performed on Scientific Linux as supported by DESY and CERN and on openSUSE and Debian.
RAM: Depending on the complexity of the problem, recommended at least 128MB RAM.
Keywords: QCD, NLO computations, dipole formalism, Catani-Seymour subtraction.
PACS: 12.38.-t, 12.38.Aw, 12.38.Bx.
Classification: 11.5.

External routines: MadGraph (including HELAS library) available under
http://madgraph.hep.uiuc.edu/ or
http://madgraph.phys.ucl.ac.be/ or
http://madgraph.roma2.infn.it/.
A copy of the tar file, MG_ME_SA_V4.4.30, is included in the AutoDipole distribution package.

Nature of problem:
Computation of next-to-leading order QCD corrections to scattering cross sections, regularization of real emission contributions.

Solution method:
Catani-Seymour subtraction method for massless and massive partons [1, 2]; Numerical evaluation of subtracted matrix elements interfaced to MadGraph [3 4] (stand-alone version) using helicity amplitudes and the HELAS library [5, 6] (contained in MadGraph).

Restrictions:
Limitations of MadGraph are inherited.

Running time:
Dependent on the complexity of the problem with typical run times of the order of minutes.

References:
[1] S. Catani and M.H. Seymour, Nucl. Phys. B485 (1997) 291, hep-ph/9605323.
[2] S. Catani et al., Nucl. Phys. B627 (2002) 189, hep-ph/0201036.
[3] T. Stelzer and W.F. Long, Comput. Phys. Commun. 81 (1994) 357, hep-ph/9401258.
[4] J. Alwall et al., JHEP 09 (2007) 028, arXiv:0706.2334
[hep-ph] .
[5] K. Hagiwara, H. Murayama and I. Watanabe, Nucl. Phys. B367 (1991) 257.
[6] H. Murayama, I. Watanabe and K. Hagiwara, KEK-91-11.