Parsing, manipulating, and visualising SUSY Les Houches Accord data
Project description
A simple but flexible handler of the SUSY Les Houches Accord (SLHA) data format.
pyslha is a parser/writer module for particle physics SUSY Les Houches Accord
(SLHA) supersymmetric spectrum/decay files, and a collection of scripts which
use the interface, e.g. for conversion to and from the legacy ISAWIG format, or
to plot the mass spectrum and decay chains.
The current release supports SLHA version 1, and as far as I'm aware is also
fully compatible with SLHA2: the block structures are read and accessed
generically. If you have any problems, please provide an example input file and
I'll happily investigate.
The plotting script provides output in PDF, EPS and PNG via LaTeX and the TikZ
graphics package, and as LaTeX/TikZ source for direct embedding into documents or
user-tweaking of the generated output.
Users of version 1.x should note that the interface has changed a little in
version 2.0.0 and onward, in particular in the interface of the Block objects,
which are now more dict-like: entries can be added and accessed via the usual
square-brackets indexing operators, including for multiple indices as is common
for mixing matrices e.g. NMIX[1,2] as opposed to the old NMIX.entries[1][2]
way. This does break backward compatibility but is a big improvement both for
internal code sanity and usability. The Block interface also now supplies
dict-like has_key(), keys(), and items() methods, as well as more specialist
value(), set_value() and is_single_valued() methods for improved access to ALPHA
and any other unindexed blocks.
If you use PySLHA, for either model data handling or spectrum visualisation,
please cite the paper: http://arxiv.org/abs/1305.4194
TODOs:
For 2.1.4:
* In set_value, if first item is non-int, treat as None-indexed
* Refine value string heuristic for strings with ints in them?
For 2.2.0:
* Add Sphinx docs.
* Preserve comments from read -> write (needs full-line/inline comment
separation). Can use separate comment dicts in Block and Decay, and
attach a multiline .comment attr to the returned/written dicts.
For 3.0.0:
* Add a new Doc type which encapsulates the blocks, decays, xsections,
etc. data sections and will act as a more robust single return value from
the read commands / argument to the write commands. Can also handle
document-level header comments this way and improve the __repr__ resulting
from an interactive read() call without a target variable (i.e. hide the
uninteresting OrderedDict boilerplate).
Later/maybe:
* Identify HERWIG decay matrix element to use in ISAWIG
* Handle RPV SUSY in ISAWIG
pyslha is a parser/writer module for particle physics SUSY Les Houches Accord
(SLHA) supersymmetric spectrum/decay files, and a collection of scripts which
use the interface, e.g. for conversion to and from the legacy ISAWIG format, or
to plot the mass spectrum and decay chains.
The current release supports SLHA version 1, and as far as I'm aware is also
fully compatible with SLHA2: the block structures are read and accessed
generically. If you have any problems, please provide an example input file and
I'll happily investigate.
The plotting script provides output in PDF, EPS and PNG via LaTeX and the TikZ
graphics package, and as LaTeX/TikZ source for direct embedding into documents or
user-tweaking of the generated output.
Users of version 1.x should note that the interface has changed a little in
version 2.0.0 and onward, in particular in the interface of the Block objects,
which are now more dict-like: entries can be added and accessed via the usual
square-brackets indexing operators, including for multiple indices as is common
for mixing matrices e.g. NMIX[1,2] as opposed to the old NMIX.entries[1][2]
way. This does break backward compatibility but is a big improvement both for
internal code sanity and usability. The Block interface also now supplies
dict-like has_key(), keys(), and items() methods, as well as more specialist
value(), set_value() and is_single_valued() methods for improved access to ALPHA
and any other unindexed blocks.
If you use PySLHA, for either model data handling or spectrum visualisation,
please cite the paper: http://arxiv.org/abs/1305.4194
TODOs:
For 2.1.4:
* In set_value, if first item is non-int, treat as None-indexed
* Refine value string heuristic for strings with ints in them?
For 2.2.0:
* Add Sphinx docs.
* Preserve comments from read -> write (needs full-line/inline comment
separation). Can use separate comment dicts in Block and Decay, and
attach a multiline .comment attr to the returned/written dicts.
For 3.0.0:
* Add a new Doc type which encapsulates the blocks, decays, xsections,
etc. data sections and will act as a more robust single return value from
the read commands / argument to the write commands. Can also handle
document-level header comments this way and improve the __repr__ resulting
from an interactive read() call without a target variable (i.e. hide the
uninteresting OrderedDict boilerplate).
Later/maybe:
* Identify HERWIG decay matrix element to use in ISAWIG
* Handle RPV SUSY in ISAWIG
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