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[Licence| Download | New Version Template] aejp_v1_1.tar.gz(286536 Kbytes)
Manuscript Title: W physics at the LHC with FEWZ 2.1
Authors: Seth Quackenbush, Ryan Gavin, Ye Li, Frank Petriello
Program title: FEWZ 2.1
Catalogue identifier: AEJP_v1_1
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 184(2013)209
Programming language: Fortran 77, C++, Python 2.4.
Computer: x86/x86-64.
Operating system: Unix/Linux, Mac OSX.
RAM: 200 Mbytes
Keywords: W, NNLO.
PACS: 12.38.Bx.
Classification: 11.1.

External routines: CUBA (included), LHAPDF (optional)

Does the new version supersede the previous version?: Yes

Nature of problem:
Calculation of hadroproduction of W bosons, with differential distributions, at next-to-next-to-leading order in the strong coupling.

Solution method:
Integral reduction, sector decomposition, numerical integration

Reasons for new version:
Reintroduction of W boson to FEWZ 2

Summary of revisions:
Addition of W boson production, now can run in W or Z/gamma mode. LHAPDF interface added. Large speed improvements achieved through caching repeat function calls. New observables and histograms. Improved histogram binning.

Additional comments:
Running with all histograms on requires approx. 1 GB of disk space to store intermediate files.

Running time:
2 hours to achieve NNLO precision in cross section on multicore machines, up to a few days for quality kinematic distributions. Cluster running is considerably faster.