MadGraph5_aMC@NLO

SubProcesses doesn't have available phase-space. Please check mass spectrum.

Asked by Maikel de Vries

Hi there,

I generate the following event:
define q = d d~ u u~ s s~ c c~ b b~
define qh = dh dh~ uh uh~ sh sh~ ch ch~ bh bh~
generate p p > qh qh, (qh > q gh, gh > q q)

the heavy guys are basically heavy partners of the quark and the gluon.

Then I try to generate this six jet final state, but it ends with:
 P0_gg_dhdhx_dh_dgh_gh_ddx_dhx_dxgh_gh_ddx,P0_gg_dhdhx_dh_dgh_gh_uux_dhx_dxgh_gh_uux,P0_gg_dhdhx_dh_dgh_gh_ssx_dhx_dxgh_gh_ssx,P0_gg_dhdhx_dh_dgh_gh_ccx_dhx_dxgh_gh_ccx,P0_gg_dhdhx_dh_dgh_gh_bbx_dhx_dxgh_gh_bbx,P0_gg_uhuhx_uh_ugh_gh_ddx_uhx_uxgh_gh_ddx,P0_gg_uhuhx_uh_ugh_gh_uux_uhx_uxgh_gh_uux,P0_gg_uhuhx_uh_ugh_gh_ssx_uhx_uxgh_gh_ssx,P0_gg_uhuhx_uh_ugh_gh_ccx_uhx_uxgh_gh_ccx,P0_gg_uhuhx_uh_ugh_gh_bbx_uhx_uxgh_gh_bbx,P0_gg_shshx_sh_sgh_gh_ddx_shx_sxgh_gh_ddx,P0_gg_shshx_sh_sgh_gh_uux_shx_sxgh_gh_uux,P0_gg_shshx_sh_sgh_gh_ssx_shx_sxgh_gh_ssx,P0_gg_shshx_sh_sgh_gh_ccx_shx_sxgh_gh_ccx,P0_gg_shshx_sh_sgh_gh_bbx_shx_sxgh_gh_bbx,P0_gg_chchx_ch_cgh_gh_ddx_chx_cxgh_gh_ddx,P0_gg_chchx_ch_cgh_gh_uux_chx_cxgh_gh_uux,P0_gg_chchx_ch_cgh_gh_ssx_chx_cxgh_gh_ssx,P0_gg_chchx_ch_cgh_gh_ccx_chx_cxgh_gh_ccx,P0_gg_chchx_ch_cgh_gh_bbx_chx_cxgh_gh_bbx,P0_gg_bhbhx_bh_bgh_gh_ddx_bhx_bxgh_gh_ddx,P0_gg_bhbhx_bh_bgh_gh_uux_bhx_bxgh_gh_uux,P0_gg_bhbhx_bh_bgh_gh_ssx_bhx_bxgh_gh_ssx,P0_gg_bhbhx_bh_bgh_gh_ccx_bhx_bxgh_gh_ccx,P0_gg_bhbhx_bh_bgh_gh_bbx_bhx_bxgh_gh_bbx SubProcesses doesn't have available phase-space.
            Please check mass spectrum.

 Idle: 0 Running: 4 Finish: 4731
Command "generate_events test2" interrupted with error:
IOError : [Errno 2] No such file or directory: '/home/maikel/Programs/MadGraph5/mc/RHComp6j/SubProcesses/P0_uu_uhuh_uh_ugh_gh_ddx_uh_ugh_gh_ddx/G2/results.dat'
Please report this bug on https://bugs.launchpad.net/madgraph5
More information is found in '/home/maikel/Programs/MadGraph5/mc/RHComp6j/test2_tag_1_debug.log'.
Please attach this file to your report.

I checked the mass spectrum, and it allows for the subsequent decays, is there something I am doing wrong?

Question information

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MadGraph5_aMC@NLO Edit question
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Solved by:
Maikel de Vries
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Revision history for this message
Maikel de Vries (mdt-maikel) said : 		#1

This is the file I am suppossed to attach:

#************************************************************
#* MadGraph/MadEvent 5 *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 1.5.1 2012-11-06 *
#* *
#* The MadGraph Development Team - Please visit us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* *
#************************************************************
#* *
#* Command File for MadEvent *
#* *
#* run as ./bin/madevent.py filename *
#* *
#************************************************************
generate_events test2
Traceback (most recent call last):
  File "/home/maikel/Programs/MadGraph5/madgraph/interface/extended_cmd.py", line 669, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/home/maikel/Programs/MadGraph5/madgraph/interface/extended_cmd.py", line 662, in onecmd_orig
    return func(arg, **opt)
  File "/home/maikel/Programs/MadGraph5/madgraph/interface/madevent_interface.py", line 2074, in do_generate_events
    postcmd=False)
  File "/home/maikel/Programs/MadGraph5/madgraph/interface/extended_cmd.py", line 709, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/home/maikel/Programs/MadGraph5/madgraph/interface/extended_cmd.py", line 662, in onecmd_orig
    return func(arg, **opt)
  File "/home/maikel/Programs/MadGraph5/madgraph/interface/madevent_interface.py", line 2448, in do_survey
    cross, error = sum_html.make_all_html_results(self)
  File "/home/maikel/Programs/MadGraph5/madgraph/various/sum_html.py", line 384, in make_all_html_results
    P_comb.add_results(name, pjoin(P_path,name,'results.dat'), mfactor)
  File "/home/maikel/Programs/MadGraph5/madgraph/various/sum_html.py", line 124, in add_results
    oneresult.read_results(filepath)
  File "/home/maikel/Programs/MadGraph5/madgraph/various/misc.py", line 155, in deco_f_retry
    return f(*args, **opt)
  File "/home/maikel/Programs/MadGraph5/madgraph/various/sum_html.py", line 56, in read_results
    for line in open(filepath):
IOError: [Errno 2] No such file or directory: '/home/maikel/Programs/MadGraph5/mc/RHComp6j/SubProcesses/P0_uu_uhuh_uh_ugh_gh_ddx_uh_ugh_gh_ddx/G2/results.dat'
                              Run Options
                              -----------
               stdout_level : 20 (user set)

                         MadEvent Options
                         ----------------
     automatic_html_opening : False (user set)
          cluster_temp_path : None
              cluster_queue : None (user set)
                    nb_core : 6 (user set)
                   run_mode : 2

                      Configuration Options
                      ---------------------
                web_browser : None
                text_editor : None
           madanalysis_path : None (user set)
               pythia8_path : None (user set)
            pythia-pgs_path : /home/maikel/Programs/MadGraph5/pythia-pgs (user set)
                    td_path : None (user set)
               delphes_path : /home/maikel/Programs/MadGraph5/Delphes (user set)
                auto_update : 7 (user set)
               cluster_type : condor
           fortran_compiler : gfortran (user set)
        exrootanalysis_path : /home/maikel/Programs/MadGraph5/ExRootAnalysis (user set)
                 eps_viewer : None
                    timeout : 60

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#2

Hi,

Could you send me by email (omatt at illinois.edu
your model and the param_card that you are using?

Thanks,

Olivier

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#3

In fact,
I think that this error is already solved in 1.5.2.
Could you check with the last version of MG5?

Cheers,

Olivier

Revision history for this message
Maikel de Vries (mdt-maikel) said : 		#4

Thanks for the suggestions, I'll check that in the weekend, if it doesn't work I'll provide you with a more compact example.

Best, Maikel

Revision history for this message
Maikel de Vries (mdt-maikel) said : 		#5

Is there an easy way to update to the latest version?

install update

only seems to update to stable versions.

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#6

If install update fails.
The only way is to re-install MG5 via the download package.

Cheers,

Olivier

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#7

Hi Maikel,

I've run the full computation over the night. And the script pass the point where you observed a bug.
So I will not dig further since as we discussed by email, this is not an efficient way to make the computation.
(It's important to use a model where the mass of the light quark are set to zero).

So please run with that restriction. If you still face problem in that mode, don't hesitate to come back to us.

Cheers,

Olivier

Revision history for this message
Maikel de Vries (mdt-maikel) said : 		#8

Hello,

Agreed, since the restricted model has no problems I can safely use that.
I'll reopen if I run into the same problems with that model.

Thanks, Maikel