August 30, 2021
Inclusive jet DIS grids at NNLO for H1 and ZEUS
Updated versions of the inclusive jet DIS grids, filled from NNLOJET, are available
now here or
via the Ploughshare web site.
August 21, 2021
Release of toolkit code v2.5
This release contains numerous updates from the development of grid productions for
NNLO calculations using the APPLfast interface (nnlo-bridge) to the NNLOJET program.
In particular, the new grid format v2.5 allows additional information on the
numerical precision for each fixed-order contribution to be contained directly
within the grid in so-called InfoBlocks. The evaluation code is backwards compatible,
but new v2.5 grids require at least this release.
As usual, the new package can be downloaded from our
code web pages as
fastnlo_toolkit-2.5.0-2826.tar.gz.
The publically accessible fastNLO repository has been migrated to the
gitlab server at KIT
The Toolkit code can be found in the subdirectory v2.5/toolkit
New tables for DIS at NNLO will very soon be made available here as well as on the Ploughshare wen site..
November 12, 2018
Test release for evaluation of interpolation tables filled from NNLOJET
As usual, the new package can be downloaded from our
code web pages as
fastnlo_toolkit-2.3.1-2585.tar.gz.
Test tables will be made available via the Ploughshare project.
May 7, 2017
First NNLO interpolation tables available
Courtesy of M. Czakon, D. Heymes, and A. Mitov the first fastNLO interpolation tables
at NNLO are available for LHC ttbar production at 8 TeV, please see
this article for details.
The new tables can be downloaded from
the authors' web page.
If you use these tables please follow the authors' requests for proper citation.
They can be evaluated with the previous fastNLO release 2.3.1-rev2212 or with the newly
released version 2.3.1-rev2402. The results are identical.
May 7, 2017
New public prerelease 2.3.1-rev2402 of fastNLO Toolkit
Some major new developments are included in this release:
(Attention: compiler with C++11 support is mandatory!)
- In preparation of grid productions for NNLO calculations, many new features have been
implemented with respect to fastNLO table mass production and their statistical combination.
In particular, these are
- usage of the nnlo-bridge package (to be released) for filling fastNLO or APPLgrid
interpolation grids from NNLOJET
- extension of the fastNLO table format (2.36.00, backwards compatible) to store
statistical weight information for many new merging options addressing
statistical fluctuations in NNLO grid productions
- steering-less initialisation possible in addition to steering files
- improved warmup file generation and check
- more options for distribution of x nodes
- Support of transparent writing/reading of gzipped tables tab.gz to reduce significantly
the necessary disk space when storing large numbers of tables;
requires the zlib compression library to be present;
- Includes new test suite to check installation 'make check'
- Includes basic example for a bi-directional interface between
the C++ fastNLO toolkit and Fortran analysis / PDF fitting code (fortranext)
- The fastNLO table evaluation part is mostly unchanged, but has been
complemented with more tools to manipulate tables like
- cutting out unused bins or multiplying bins by a set of factors (fnlo-tk-modify)
- concatenating separately calculated phase-space bins into one common table (fnlo-tk-cat)
- printing out normalised cross sections directly for tables set up with normalisation flag
(fnlo-tk-cppread, fnlo-tk-yodaout)
- printing out partial cross sections for crosschecks, e.g. NLO contribution alone,
or of cross section for all members of a PDF set (fnlo-tk-cppread)
- new merger with many new options for table combination (fnlo-tk-merge2)
- Issue reported by D. Maitre fixed
- Some issues in Python wrapper fixed
As usual, the new package can be downloaded from our
code web pages.
March 14, 2017
Updated some Rivet links and point HepData links to new hepdata.net now.
March 6, 2017
New interpolation tables added
The following new tables have been added:
- Inclusive jets from CMS at 2.76 TeV.
- Inclusive jets from CMS at 8 TeV.
They can be downloaded here.
December 24, 2016
New interpolation tables added
Some new tables have been added in the meantime:
- Inclusive jets from CMS at 13 TeV. (2.76 and 8 TeV to come soon.)
- Inclusive jets table for STAR data at 0.2 TeV.
We wish you all a Merry Xmas and Happy New Year 2017
March 11, 2016
New public prerelease of fastNLO Toolkit
Some little issues fixed and:
- Add producer for ROOT files with xsections & uncertainties.
- Added executable fnlo-tk-statunc to derive statistical uncertainty from
sample of calculations with equal weight.
- Installation adapted to new autotools-enabled QCDNUM versions.
Old-style QCDNUM versions not supported anymore.
- Some adaptations for use in newer xFitter version.
- Some adaptations for use with mcgrid 2.0.
As usual, the new package can be downloaded from our
code web pages.
September 10, 2015
New public prerelease of fastNLO Toolkit
Some little issues fixed and:
- PDF uncertainties calculable via fastNLO code or via LHAPDF6 (both not for HERAPDF).
A struct with 3 vectors is returned giving x section and rel. lower and upper uncertainty.
- fnlo-tk-yodaout acquired an additional option for the fixed-order to be used, def. is NLO.
- Standard table info printout now also prints no. of x nodes.
- Improvements in table checking when merging/appending.
As usual, the new package can be downloaded from our
code web pages.
August 25, 2015
New public prerelease of fastNLO Toolkit
Only some little issues have been fixed and improvements incorporated into this prerelease:
- Interface part to MCgrid v2.0 finalized.
- Option "IgnoreWarmupBinningCheck" added, avoids warmup binning check if set to true
(useful for bin borders in pi etc.).
- An example to fill ROOT histograms from within fastNLO is provided (with input from Giannis Flouris)
- Rebuild problem in Doxygen documentation is fixed.
- Improved problem catch for ill-formatted tables.
- Added some more safety measures with respect to inf or nan entries.
- Improved logging handling.
As usual, the new package can be downloaded from our
code web pages.
May 1, 2015
New public prerelease of fastNLO Toolkit
Major work went into this prelease:
- This prerelease is meant to work with the next release of MCgrid (> v1.2) and Sherpa
to include all NLO processes available via this chain.
- A new executable fnlo-tk-yodaout has been conceived (including work by Stefanos Tyros)
that provides YODA-formatted output for inclusion of fixed-oder table evaluations
in Data/MC comparisons via Rivet. Foreseen to be used in MCplots.
- Up to triple differential observable binnings are supported, numerous
Getter functions are provided.
- Functionality to derive scale and PDF uncertainties has been added and is used
in fnlo-tk-yodaout
- fnlo-tk-config executable is provided for easier compiling/linking.
- A first version of Doxygen documentation is included.
- Method added to derive scale uncertainties.
- Numerous little issues fixed
In addition, the example interface and code for NLOjet++ with this toolkit
has been further simplified. Both packages can be downloaded from our
code web pages.
April 28, 2015
Updated talk list
The talk list
has been updated with the latest presentations up to DIS15.
April 24, 2015
Compatibility update of fastNLO Reader
fastNLO_reader version 2.1.0, revision 2066:
Compatibility update for changes in next pre-release of fastNLO_toolkit:
- Up to 3-dimensional binnings are supported
- 7 subprocesses for LO hh->jets as used in toolkit is supported
- Internally used cross section units are rescaled to published units
The updated package can be downloaded
here.
July 24, 2014
Small update of fastNLO Toolkit
Prerelease updated with small changes to eliminate some installation hiccups for
the optional parts and to remove some additional warnings found by other compilers.
The updated package can be downloaded
here.
July 17, 2014
Public prerelease of new fastNLO Toolkit
The new fastNLO Toolkit provides a library with all functionality to create, fill,
read, and evaluate interpolation tables in the fastNLO format. It comes with a much
improved structure that allows other programs to be interfaced to fastNLO.
In addition, an example interface and code how to use NLOjet++ with this toolkit
is available. Both packages can be downloaded from our
code web pages.
July 16, 2014
Finally: New calculations for H1 multijets available
New fastNLO tables for the recent measurement by H1 on multijet production
[arXiv:1406.4709] are available as
flexible-scale tables. They are complemented by further jet production tables in DIS
that were previously distributed within
the HERAFitter framework.
They can be downloaded here.
April 26, 2014
fastNLO toolkit announced
The fastNLO toolkit is a new collection of tools to create and evaluate fastNLO tables.
The development was specifically optimized to simplify interfacing fastNLO to NLO or NNLO programs.
A pre-release of the fastNLO toolkit is available on request by the authors.
February 14, 2014
Bug fix release 1689 of fastnlo_reader:
Releases 1563 and 1567 of the fastnlo_reader did not properly change to a new LHAPDF set
if another file was requested within the C++ code. The results of the very first call were not
affected.
This has been corrected in release 1689, see this
page for more info and download.
January 28, 2014
Table fnl2222b_I1087342 for CMS inclusive forward jets uploaded:
See this page.
January 8, 2014
Missing optional header file added to latest release:
Release 1563 of the fastnlo_reader code was missing an optional header file.
This has been added in release 1567, see this
page for more info and download.
December 19, 2013
New release of fastnlo_reader code:
A new release of the fastnlo_reader code (1563) is available supporting
alternative alpha_s evolutions, a Python interface and LHAPDF6. Please go to this
page for more info and download.
December 6, 2013
CMS 3-jet ratio tables online
The CMS data on the 3-jet ratio measurement are available now from HEPDATA.
The corresponding tables (numerator and denominator) are available
here.
September 20-30, 2013
New code, tables, and plots available. More work is in progress:
A new release of the fastnlo_reader code (1488) is available. Please go to this
page for more info and download.
Tevatron inclusive jets tables have been converted to be used with the new format. Please go to this
page for an overview and download. There are more tables
in the queue.
Update of "all jets plot" for 2013 available including 2011 ATLAS data at 2.76 TeV and 2011 CMS data at 7 TeV.
See the Documentation tab.
May 13, 2013
Preliminary tables for the 2011 CMS inclusive jet and dijet mass cross sections:
The numbers of the tables are final, only some text comments
inside the files and their final name and location on HepForge will
be updated as soon as the final CMS publication reference is known.
The tables can be found here CMS 2011 inclusive jets
and here CMS 2011 dijet mass.
They can be evaluated with the available fastNLO reader program/library here:
fastNLO_reader_2.1.0_1360.
January 14, 2013
Micro update release version 2.1.0, revision 1360:
To avoid the problem of an uninitialized top PDF when accessing
ABKM09 or ABM11 PDFs via Fortran in LHAPDF (versions 5.8.7 and
5.8.8), the top PDF has been set to zero explicitly in the Fortran
reader. Otherwise one could observe crashes or - even worse -
arbitrarily wrong cross sections. This problem was not present when
using the C++ reader. As a consequence some differences between the
reader programs can show up when using a PDF set with top PDFs > 0
like NNPDF 2.1 and scales Q > M_top.
This bug has been fixed in LHAPDF version 5.8.9b1 such that
the workaround could be deactivated. Use this Fortran reader revision 1360,
download: fastNLO_reader_2.1.0_1360,
ONLY with LHAPDF 5.8.9b1 or later when accessing PDF sets
ABKM09 or ABM11 !
Example output for comparison using the CMS inclusive jets 2010 table:
CTEQ66 C++
and Fortran,
NNPDF 2.1 NNLO C++,
Fortran rev. 1354 and
Fortran rev. 1360.
December 21, 2012
New World's End Xmas Edition of generic table reader, in Fortran and C++, for fastNLO version 2 available!
Download: fastNLO_reader_2.1.0_1354
See the README file for instructions and the NEWS and ChangeLog for details on the updates.
Running the example executables fnlo-cppread (or fnlo-fread for the Fortran version) with option -h
explains the available options. The main.cc source file of the C++ reader contains detailed comments
on its usage for personal adaptations. Please note that the C++ part now comes in the form of a library
that can be linked to one owns personal code, e.g. as demonstrated with the example executable fnlo-cppread.
October 16, 2012
Recent talks added
Recent talks and links added to the Documentation section.
Also, some small updates on the website layout and in the code section.
March 22, 2012
ATTENTION
By mistake the tables for the ATLAS inclusive jets with jet sizes R=0.4 and R=0.6
had been exchanged! This is fixed now. One documentation line quoting the jet size within the tables and
the corresponding links below have been corrected. So the ATLAS inclusive jet table for R=0.4 is
called fnl1016 and for R=0.6 fnl1015. Many thanks to Jun Gao for pointing this out to us.
February 14, 2012
Generic table reader, in Fortran and C++, for new fastNLO version 2 available
Download: fastNLO_reader_2.1.0_1062
New v2 tables, including threshold corrections at default scale, for ATLAS Inclusive Jets,
arXiv:1112.6297, with anti-kT jet sizes
R=0.4 and R=0.6
available.
New v2 table as well as converted v14
table for CMS Inclusive Jets,
Phys. Rev. Lett. 107 (2011) 132001,
available; v2 table also includes 2-loop threshold corrections st default scale and,
as proof of concept, the CMS non-perturbative correction factors as well as data points.
Logging output for comparison can be found here
ATLAS R=0.4, Fortran,
ATLAS R=0.4, C++,
ATLAS R=0.6, Fortran,
ATLAS R=0.6, C++,
CMS R=0.5, Fortran,
CMS R=0.5, C++,
CMS R=0.5, Fortran, converted from v14,
CMS R=0.5, C++, converted from v14.
July 04, 2011
LHAPDF 5.8.5 installed
ABKM09, CT10, NNPDF2.1_100, and HERAPDF1.0 PDFs added
CMS inclusive jets arXiv:1106.0208 and
CMS dijet mass arXiv:1104.1693
added to interactive webinterface; matching code and tables available as well.
June 10, 2010
arXiv:0906.4819
and
arXiv:1002.4594
have been added
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