diff options
Diffstat (limited to 'sci-physics/hepmc/metadata.xml')
1 files changed, 25 insertions, 0 deletions
diff --git a/sci-physics/hepmc/metadata.xml b/sci-physics/hepmc/metadata.xml
new file mode 100644
index 000000000000..5733312e2b08
--- /dev/null
+++ b/sci-physics/hepmc/metadata.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "">
+<longdescription lang="en">
+ The HepMC package is an object oriented event record written in C++
+ for High Energy Physics Monte Carlo Generators. Many extensions from
+ HEPEVT, the Fortran HEP standard, are supported: the number of entries
+ is unlimited, spin density matrices can be stored with each vertex,
+ flow patterns (such as color) can be stored and traced, integers
+ representing random number generator states can be stored, and an
+ arbitrary number of event weights can be included. Particles and
+ vertices are kept separate in a graph structure, physically similar to
+ a physics event. The added information supports the modularisation of
+ event generators. The package has been kept as simple as possible with
+ minimal internal/external dependencies. Event information is accessed
+ by means of iterators supplied with the package.
+ Reference: M. Dobbs and J.B. Hansen, Comput. Phys. Commun. 134 (2001)41.
+ <flag name='gev'>Build with GeV instead of default MeV for momentum units</flag>
+ <flag name='cm'>Build with cm instead of default mm for length units</flag>