[Rivet] beams definiton

[Hannes Jung]

Dear all

I am rying to run PHOJET with rivet, I managed to write out the hepmc record and inserted the beam particles.
It seems to be fine, but rivet cannot identify the beams. The following error appears:
----------
~/jung/cvs/rivet/myrivet>  ../../phojet/main1/main1 < ../../phojet/main1/mb.inp > test.out &     
[3] 12393
~/jung/cvs/rivet/myrivet> ../build/Rivet-1.5.0/bin/rivet-nopy /tmp/example_out.dat CMS_FWD_11_001
Rivet.Analysis.Handler: WARN  Analysis 'CMS_FWD_11_001' is unvalidated: be careful, it may be broken!
 CMS_FWD_11_001 init phase
 new event 
Assertion failed: (beams.first && beams.second), function project, file Beam.cc, line 53.
zsh: abort      ../build/Rivet-1.5.0/bin/rivet-nopy /tmp/example_out.dat CMS_FWD_11_001
----------

The first few lines of the hepmc file look like:

HepMC::Version 2.03.11
HepMC::IO_GenEvent-START_EVENT_LISTING
E 0 -1 -1.0000000000000000e+00 -1.0000000000000000e+00 -1.0000000000000000e+00 0 0 167 1 2 0 0
H 0 0 0 0 0 0 0 0 0 0 0 0 0
F 0 0 0 0 0 0 0
V -1 0 0 0 0 0 1 1 0
P 1 2212 0 0 3.5000000000000000e+03 3.5000000000000000e+03 9.3827000000000005e-01 3 0 0 -1 0
P 3 1 -1.9197591135156278e+00 -3.9088666188920991e-02 1.8743428161779718e+01 1.8841528606871407e+01 9.9000002932664519e-03 2 0 0 -3 0
V -2 0 0 0 0 0 1 27 0
P 2 2212 0 0 -3.5000000000000000e+03 3.5000000000000000e+03 9.3827000000000005e-01 3 0 0 -2 0
P 4 -2 4.9018658469058018e-01 5.6550380835818814e-01 -2.0026574606985077e+03 2.0026576005398924e+03 5.5999254606944934e-03 2 0 0 -4 0
P 5 -1 -2.1560772467809458e-01 -1.8019388783202768e+00 2.5303300407030580e+00 3.1138623182516181e+00 9.8999999999710413e-03 2 0 0 -5 0
.....

Any idea what I am doing wrong here ?

Thanks a lot
Cheers
Hannes



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Hannes Jung 
Email: Hannes.Jung at cern.ch
mobile :+49 40 8998 93741
http://www.desy.de/~jung                                           
Tel: +49 (0) 40 8998 3741 (DESY)
Tel: +41 22 76 71691 (CERN)       
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