MadGraph5_aMC@NLO

ValueError : max() arg is an empty sequence

Asked by Ankur Panchal

I am trying to generate the process mu- mu+ > go go q q~ in the mssm model. While launching the process, I get the following error
Command "generate_events run_01" interrupted with error:
ValueError : max() arg is an empty sequence

How do I debug this?

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Olivier Mattelaer (olivier-mattelaer) said : 		#1

What is the version of MG5aMC that you are using?
What is the content of the debug file?

This sound similar to this: https://answers.launchpad.net/mg5amcnlo/+question/706940 but that was for NLO computation,
you are doing LO right?

Cheers,

Olivier

Revision history for this message
Ankur Panchal (ankurpanchal) said (last edit ): 		#2

Yes I am doing LO. And here is my debug file content (MG version mentioned in it):

#************************************************************
#* MadGraph5_aMC@NLO/MadEvent *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 3.5.1 2023-07-11 *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* *
#************************************************************
#* *
#* Command File for MadEvent *
#* *
#* run as ./bin/madevent.py filename *
#* *
#************************************************************
generate_events run_01
Traceback (most recent call last):
  File "/home/ankur/Desktop/MG5_aMC_v3_5_0/madgraph/interface/extended_cmd.py", line 1543, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/home/ankur/Desktop/MG5_aMC_v3_5_0/madgraph/interface/extended_cmd.py", line 1492, in onecmd_orig
    return func(arg, **opt)
  File "/home/ankur/Desktop/MG5_aMC_v3_5_0/madgraph/interface/madevent_interface.py", line 2403, in do_generate_events
    self.run_generate_events(switch_mode, args)
  File "/home/ankur/Desktop/MG5_aMC_v3_5_0/madgraph/interface/common_run_interface.py", line 7656, in new_fct
    original_fct(obj, *args, **opts)
  File "/home/ankur/Desktop/MG5_aMC_v3_5_0/madgraph/interface/madevent_interface.py", line 2597, in run_generate_events
    self.exec_cmd('survey %s %s' % (self.run_name,' '.join(args)),
  File "/home/ankur/Desktop/MG5_aMC_v3_5_0/madgraph/interface/extended_cmd.py", line 1572, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/home/ankur/Desktop/MG5_aMC_v3_5_0/madgraph/interface/extended_cmd.py", line 1492, in onecmd_orig
    return func(arg, **opt)
  File "/home/ankur/Desktop/MG5_aMC_v3_5_0/madgraph/interface/madevent_interface.py", line 3456, in do_survey
    jobs, P_zero_result = ajobcreator.get_helicity()
  File "/home/ankur/Desktop/MG5_aMC_v3_5_0/madgraph/madevent/gen_ximprove.py", line 159, in get_helicity
    nb_channel = max([math.floor(float(d)) for d in stdout.split()])
ValueError: max() arg is an empty sequence
                              Run Options
                              -----------
               stdout_level : 20 (user set)

                         MadEvent Options
                         ----------------
     automatic_html_opening : False (user set)
        notification_center : True
                   run_mode : 2
              cluster_queue : None (user set)
               cluster_time : None (user set)
               cluster_size : 100
             cluster_memory : 100 (user set)
                    nb_core : 12 (user set)
          cluster_temp_path : None

                      Configuration Options
                      ---------------------
               pythia8_path : None (user set)
                  hwpp_path : None (user set)
                thepeg_path : None (user set)
                 hepmc_path : None (user set)
           madanalysis_path : None (user set)
          madanalysis5_path : None (user set)
            pythia-pgs_path : None (user set)
                    td_path : None (user set)
               delphes_path : None (user set)
        exrootanalysis_path : None (user set)
               syscalc_path : None (user set)
                 rivet_path : None
                  yoda_path : None
                     lhapdf : lhapdf-config
                 lhapdf_py2 : None
                 lhapdf_py3 : None
                    timeout : 60
              f2py_compiler : None
          f2py_compiler_py2 : None
          f2py_compiler_py3 : None
                web_browser : None
                 eps_viewer : None
                text_editor : None
           fortran_compiler : None
               cpp_compiler : None
                auto_update : 7 (user set)
               cluster_type : condor
      cluster_status_update : (600, 30)
           cluster_nb_retry : 1
         cluster_local_path : None
         cluster_retry_wait : 300
#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 3.5.1 2023-07-11 *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* *
#************************************************************
#* *
#* Command File for MadGraph5_aMC@NLO *
#* *
#* run as ./bin/mg5_aMC filename *
#* *
#************************************************************
set group_subprocesses Auto
set ignore_six_quark_processes False
set low_mem_multicore_nlo_generation False
set complex_mass_scheme False
set include_lepton_initiated_processes False
set gauge unitary
set loop_optimized_output True
set loop_color_flows False
set max_npoint_for_channel 0
set default_unset_couplings 99
set max_t_for_channel 99
set zerowidth_tchannel True
set nlo_mixed_expansion True
import model MSSM_SLHA2 -modelname
define p = g u c d s u~ c~ d~ s~
define j = g u c d s u~ c~ d~ s~
define l+ = e+ mu+
define l- = e- mu-
define vl = ve vm vt
define vl~ = ve~ vm~ vt~
define p = p b b~ t t~
generate mu- mu+ > go go u u~
output mssm_mumu_gogoqq
######################################################################
## PARAM_CARD AUTOMATICALY GENERATED BY MG5 ####
######################################################################
###################################
## INFORMATION FOR DSQMIX
###################################
BLOCK DSQMIX #
      1 1 1.000000e+00 # rrd1x1
      2 2 1.000000e+00 # rrd2x2
      3 3 9.387379e-01 # rrd3x3
      3 6 3.446319e-01 # rrd3x6
      4 4 1.000000e+00 # rrd4x4
      5 5 1.000000e+00 # rrd5x5
      6 3 -3.446319e-01 # rrd6x3
      6 6 9.387379e-01 # rrd6x6
###################################
## INFORMATION FOR FRALPHA
###################################
BLOCK FRALPHA #
      1 -1.138252e-01 # alp
###################################
## INFORMATION FOR HMIX
###################################
BLOCK HMIX #
      1 3.576810e+02 # rmuh
      2 9.748624e+00 # tb
      4 1.664391e+05 # ma2
###################################
## INFORMATION FOR MASS
###################################
BLOCK MASS #
      5 4.889917e+00 # mb
      6 1.750000e+02 # mt
      15 1.777000e+00 # mta
      23 9.118760e+01 # mz
      24 7.982901e+01 # mw
      25 1.108991e+02 # mh01
      35 3.999601e+02 # mh02
      36 3.995839e+02 # ma0
      37 4.078790e+02 # mh
      1000001 5.684411e+02 # set of param :1*msd1, 1*msd2
      1000002 5.611190e+02 # set of param :1*msu1, 1*msu2
      1000005 5.130652e+02 # msd3
      1000006 3.996685e+02 # msu3
      1000011 2.029157e+02 # set of param :1*msl1, 1*msl2
      1000012 1.852583e+02 # set of param :1*msn1, 1*msn2
      1000015 1.344909e+02 # msl3
      1000016 1.847085e+02 # msn3
      1000021 6.000000e+02 # mgo
      1000022 9.668807e+01 # mneu1
      1000023 1.810882e+02 # mneu2
      1000024 1.816965e+02 # mch1
      1000025 -3.637560e+02 # mneu3
      1000035 3.817294e+02 # mneu4
      1000037 3.799393e+02 # mch2
      2000001 5.452285e+02 # set of param :1*msd4, 1*msd5
      2000002 5.492593e+02 # set of param :1*msu4, 1*msu5
      2000005 5.437267e+02 # msd6
      2000006 5.857858e+02 # msu6
      2000011 1.441028e+02 # set of param :1*msl4, 1*msl5
      2000015 2.068678e+02 # msl6
      1 0.000000e+00 # d : 0.0
      2 0.000000e+00 # u : 0.0
      3 0.000000e+00 # s : 0.0
      4 0.000000e+00 # c : 0.0
      11 0.000000e+00 # e- : 0.0
      12 0.000000e+00 # ve : 0.0
      13 0.000000e+00 # mu- : 0.0
      14 0.000000e+00 # vm : 0.0
      16 0.000000e+00 # vt : 0.0
      21 0.000000e+00 # g : 0.0
      22 0.000000e+00 # a : 0.0
      1000014 1.852583e+02 # sv2 : msn1
      1000013 2.029157e+02 # sl2- : msl1
      2000013 1.441028e+02 # sl5- : msl4
      1000004 5.611190e+02 # su2 : msu1
      2000004 5.492593e+02 # su5 : msu4
      1000003 5.684411e+02 # sd2 : msd1
      2000003 5.452285e+02 # sd5 : msd4
###################################
## INFORMATION FOR MSD2
###################################
BLOCK MSD2 #
      1 1 2.736847e+05 # set of param :1*rmd21x1, 1*rmd22x2
      2 2 2.736847e+05 # mg5 will not use this value use instead 1*mdl_rmd21x1
      3 3 2.702620e+05 # rmd23x3
###################################
## INFORMATION FOR MSE2
###################################
BLOCK MSE2 #
      1 1 1.863063e+04 # set of param :1*rme21x1, 1*rme22x2
      2 2 1.863063e+04 # mg5 will not use this value use instead 1*mdl_rme21x1
      3 3 1.796764e+04 # rme23x3
###################################
## INFORMATION FOR MSL2
###################################
BLOCK MSL2 #
      1 1 3.815567e+04 # set of param :1*rml21x1, 1*rml22x2
      2 2 3.815567e+04 # mg5 will not use this value use instead 1*mdl_rml21x1
      3 3 3.782868e+04 # rml23x3
###################################
## INFORMATION FOR MSOFT
###################################
BLOCK MSOFT #
      1 1.013965e+02 # rmx1
      2 1.915042e+02 # rmx2
      3 5.882630e+02 # rmx3
      21 3.233749e+04 # mhd2
      22 -1.288001e+05 # mhu2
###################################
## INFORMATION FOR MSQ2
###################################
BLOCK MSQ2 #
      1 1 2.998367e+05 # set of param :1*rmq21x1, 1*rmq22x2
      2 2 2.998367e+05 # mg5 will not use this value use instead 1*mdl_rmq21x1
      3 3 2.487654e+05 # rmq23x3
###################################
## INFORMATION FOR MSU2
###################################
BLOCK MSU2 #
      1 1 2.803821e+05 # set of param :1*rmu21x1, 1*rmu22x2
      2 2 2.803821e+05 # mg5 will not use this value use instead 1*mdl_rmu21x1
      3 3 1.791371e+05 # rmu23x3
###################################
## INFORMATION FOR NMIX
###################################
BLOCK NMIX #
      1 1 9.863644e-01 # rnn1x1
      1 2 -5.311036e-02 # rnn1x2
      1 3 1.464340e-01 # rnn1x3
      1 4 -5.311861e-02 # rnn1x4
      2 1 9.935054e-02 # rnn2x1
      2 2 9.449493e-01 # rnn2x2
      2 3 -2.698467e-01 # rnn2x3
      2 4 1.561507e-01 # rnn2x4
      3 1 -6.033880e-02 # rnn3x1
      3 2 8.770049e-02 # rnn3x2
      3 3 6.958775e-01 # rnn3x3
      3 4 7.102270e-01 # rnn3x4
      4 1 -1.165071e-01 # rnn4x1
      4 2 3.107390e-01 # rnn4x2
      4 3 6.492260e-01 # rnn4x3
      4 4 -6.843778e-01 # rnn4x4
###################################
## INFORMATION FOR SELMIX
###################################
BLOCK SELMIX #
      1 1 1.000000e+00 # rrl1x1
      2 2 1.000000e+00 # rrl2x2
      3 3 2.824872e-01 # rrl3x3
      3 6 9.592711e-01 # rrl3x6
      4 4 1.000000e+00 # rrl4x4
      5 5 1.000000e+00 # rrl5x5
      6 3 9.592711e-01 # rrl6x3
      6 6 -2.824872e-01 # rrl6x6
###################################
## INFORMATION FOR SMINPUTS
###################################
BLOCK SMINPUTS #
      1 1.279340e+02 # aewm1
      3 1.180000e-01 # as (note that parameter not used if you use a pdf set)
###################################
## INFORMATION FOR SNUMIX
###################################
BLOCK SNUMIX #
      1 1 1.000000e+00 # rrn1x1
      2 2 1.000000e+00 # rrn2x2
      3 3 1.000000e+00 # rrn3x3
###################################
## INFORMATION FOR TD
###################################
BLOCK TD #
      3 3 -1.106937e+02 # rtd3x3
###################################
## INFORMATION FOR TE
###################################
BLOCK TE #
      3 3 -2.540197e+01 # rte3x3
###################################
## INFORMATION FOR TU
###################################
BLOCK TU #
      3 3 -4.447525e+02 # rtu3x3
###################################
## INFORMATION FOR UMIX
###################################
BLOCK UMIX #
      1 1 9.168349e-01 # ruu1x1
      1 2 -3.992666e-01 # ruu1x2
      2 1 3.992666e-01 # ruu2x1
      2 2 9.168349e-01 # ruu2x2
###################################
## INFORMATION FOR UPMNS
###################################
BLOCK UPMNS #
      1 1 1.000000e+00 # rmns1x1
      2 2 1.000000e+00 # rmns2x2
      3 3 1.000000e+00 # rmns3x3
###################################
## INFORMATION FOR USQMIX
###################################
BLOCK USQMIX #
      1 1 1.000000e+00 # rru1x1
      2 2 1.000000e+00 # rru2x2
      3 3 5.536450e-01 # rru3x3
      3 6 8.327528e-01 # rru3x6
      4 4 1.000000e+00 # rru4x4
      5 5 1.000000e+00 # rru5x5
      6 3 8.327528e-01 # rru6x3
      6 6 -5.536450e-01 # rru6x6
###################################
## INFORMATION FOR VCKM
###################################
BLOCK VCKM #
      1 1 1.000000e+00 # rckm1x1
      2 2 1.000000e+00 # rckm2x2
      3 3 1.000000e+00 # rckm3x3
###################################
## INFORMATION FOR VMIX
###################################
BLOCK VMIX #
      1 1 9.725578e-01 # rvv1x1
      1 2 -2.326612e-01 # rvv1x2
      2 1 2.326612e-01 # rvv2x1
      2 2 9.725578e-01 # rvv2x2
###################################
## INFORMATION FOR YD
###################################
BLOCK YD #
      3 3 1.388402e-01 # ryd3x3
###################################
## INFORMATION FOR YE
###################################
BLOCK YE #
      3 3 1.008908e-01 # rye3x3
###################################
## INFORMATION FOR YU
###################################
BLOCK YU #
      3 3 8.928445e-01 # ryu3x3
###################################
## INFORMATION FOR DECAY
###################################
BLOCK QNUMBERS 1000022 # n1
      1 0 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000023
###################################
BLOCK QNUMBERS 1000023 # n2
      1 0 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000025
###################################
BLOCK QNUMBERS 1000025 # n3
      1 0 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000035
###################################
BLOCK QNUMBERS 1000035 # n4
      1 0 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000024
###################################
BLOCK QNUMBERS 1000024 # x1+
      1 3 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000037
###################################
BLOCK QNUMBERS 1000037 # x2+
      1 3 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000021
###################################
BLOCK QNUMBERS 1000021 # go
      1 0 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 8 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 35
###################################
BLOCK QNUMBERS 35 # h02
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 36
###################################
BLOCK QNUMBERS 36 # a0
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 37
###################################
BLOCK QNUMBERS 37 # h+
      1 3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000012
###################################
BLOCK QNUMBERS 1000012 # sv1
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000014
###################################
BLOCK QNUMBERS 1000014 # sv2
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000016
###################################
BLOCK QNUMBERS 1000016 # sv3
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000011
###################################
BLOCK QNUMBERS 1000011 # sl1-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000013
###################################
BLOCK QNUMBERS 1000013 # sl2-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000015
###################################
BLOCK QNUMBERS 1000015 # sl3-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000011
###################################
BLOCK QNUMBERS 2000011 # sl4-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000013
###################################
BLOCK QNUMBERS 2000013 # sl5-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000015
###################################
BLOCK QNUMBERS 2000015 # sl6-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000002
###################################
BLOCK QNUMBERS 1000002 # su1
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000004
###################################
BLOCK QNUMBERS 1000004 # su2
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000006
###################################
BLOCK QNUMBERS 1000006 # su3
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000002
###################################
BLOCK QNUMBERS 2000002 # su4
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000004
###################################
BLOCK QNUMBERS 2000004 # su5
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000006
###################################
BLOCK QNUMBERS 2000006 # su6
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000001
###################################
BLOCK QNUMBERS 1000001 # sd1
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000003
###################################
BLOCK QNUMBERS 1000003 # sd2
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000005
###################################
BLOCK QNUMBERS 1000005 # sd3
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000001
###################################
BLOCK QNUMBERS 2000001 # sd4
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000003
###################################
BLOCK QNUMBERS 2000003 # sd5
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000005
###################################
BLOCK QNUMBERS 2000005 # sd6
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
#
#*************************
# Decay widths *
#*************************
#
# PDG Width
DECAY 1 0.000000e+00
#
# PDG Width
DECAY 2 0.000000e+00
#
# PDG Width
DECAY 3 0.000000e+00
#
# PDG Width
DECAY 4 0.000000e+00
#
# PDG Width
DECAY 5 0.000000e+00
#
# PDG Width
DECAY 6 1.561950e+00
#
# PDG Width
DECAY 11 0.000000e+00
#
# PDG Width
DECAY 12 0.000000e+00
#
# PDG Width
DECAY 13 0.000000e+00
#
# PDG Width
DECAY 14 0.000000e+00
#
# PDG Width
DECAY 15 0.000000e+00
#
# PDG Width
DECAY 16 0.000000e+00
#
# PDG Width
DECAY 21 0.000000e+00
#
# PDG Width
DECAY 22 0.000000e+00
#
# PDG Width
DECAY 23 2.411433e+00
#
# PDG Width
DECAY 24 2.002822e+00
#
# PDG Width
DECAY 25 1.986108e-03
#
# PDG Width
DECAY 35 5.748014e-01
#
# PDG Width
DECAY 36 6.321785e-01
#
# PDG Width
DECAY 37 5.469628e-01
#
# PDG Width
DECAY 1000001 5.312788e+00
#
# PDG Width
DECAY 1000002 5.477195e+00
#
# PDG Width
DECAY 1000003 5.312788e+00
#
# PDG Width
DECAY 1000004 5.477195e+00
#
# PDG Width
DECAY 1000005 3.736276e+00
#
# PDG Width
DECAY 1000006 2.021596e+00
#
# PDG Width
DECAY 1000011 2.136822e-01
#
# PDG Width
DECAY 1000012 1.498816e-01
#
# PDG Width
DECAY 1000013 2.136822e-01
#
# PDG Width
DECAY 1000014 1.498816e-01
#
# PDG Width
DECAY 1000015 1.483273e-01
#
# PDG Width
DECAY 1000016 1.475190e-01
#
# PDG Width
DECAY 1000021 3.799010e+00
# BR NDA ID1 ID2 ...
   1.259067e-01 2 1000005 -5 # 0.4783209948545381
   1.259067e-01 2 -1000005 5 # 0.4783209948545381
   6.126735e-02 2 2000005 -5 # 0.2327552716858082
   6.126735e-02 2 -2000005 5 # 0.2327552716858082
   5.514149e-02 2 2000003 -3 # 0.2094830703773843
   5.514149e-02 2 2000001 -1 # 0.2094830703773843
   5.514149e-02 2 -2000001 1 # 0.2094830703773843
   5.514149e-02 2 -2000003 3 # 0.2094830703773843
   5.010012e-02 2 1000006 -6 # 0.19033086140640681
   5.010012e-02 2 -1000006 6 # 0.19033086140640681
   4.765779e-02 2 2000004 -4 # 0.1810524176953623
   4.765779e-02 2 2000002 -2 # 0.1810524176953623
   4.765779e-02 2 -2000002 2 # 0.1810524176953623
   4.765779e-02 2 -2000004 4 # 0.1810524176953623
   2.856362e-02 2 1000004 -4 # 0.10851347770354008
   2.856362e-02 2 1000002 -2 # 0.10851347770354008
   2.856362e-02 2 -1000002 2 # 0.10851347770354008
   2.856362e-02 2 -1000004 4 # 0.10851347770354008
#
# PDG Width
DECAY 1000022 0.000000e+00
#
# PDG Width
DECAY 1000023 2.077700e-02
#
# PDG Width
DECAY 1000024 1.704145e-02
#
# PDG Width
DECAY 1000025 1.915985e+00
#
# PDG Width
DECAY 1000035 2.585851e+00
#
# PDG Width
DECAY 1000037 2.486895e+00
#
# PDG Width
DECAY 2000001 2.858123e-01
#
# PDG Width
DECAY 2000002 1.152973e+00
#
# PDG Width
DECAY 2000003 2.858123e-01
#
# PDG Width
DECAY 2000004 1.152973e+00
#
# PDG Width
DECAY 2000005 8.015663e-01
#
# PDG Width
DECAY 2000006 7.373133e+00
#
# PDG Width
DECAY 2000011 2.161216e-01
#
# PDG Width
DECAY 2000013 2.161216e-01
#
# PDG Width
DECAY 2000015 2.699061e-01
#*********************************************************************
# MadGraph5_aMC@NLO *
# *
# run_card.dat MadEvent *
# *
# This file is used to set the parameters of the run. *
# *
# Some notation/conventions: *
# *
# Lines starting with a '# ' are info or comments *
# *
# mind the format: value = variable ! comment *
# *
# To display more options, you can type the command: *
# update to_full *
#*********************************************************************
#
#*********************************************************************
# Tag name for the run (one word) *
#*********************************************************************
  tag_1 = run_tag ! name of the run
#*********************************************************************
# Number of events and rnd seed *
# Warning: Do not generate more than 1M events in a single run *
#*********************************************************************
  10000 = nevents ! Number of unweighted events requested
  0 = iseed ! rnd seed (0=assigned automatically=default))
#*********************************************************************
# Collider type and energy *
# lpp: 0=No PDF, 1=proton, -1=antiproton, *
# 2=elastic photon of proton/ion beam *
# +/-3=PDF of electron/positron beam *
# +/-4=PDF of muon/antimuon beam *
#*********************************************************************
  0 = lpp1 ! beam 1 type
  0 = lpp2 ! beam 2 type
  100.0 = ebeam1 ! beam 1 total energy in GeV
  100.0 = ebeam2 ! beam 2 total energy in GeV
#*********************************************************************
# Beam polarization from -100 (left-handed) to 100 (right-handed) *
#*********************************************************************
  0.0 = polbeam1 ! beam polarization for beam 1
  0.0 = polbeam2 ! beam polarization for beam 2

#*********************************************************************
# PDF CHOICE: this automatically fixes alpha_s and its evol. *
# pdlabel: lhapdf=LHAPDF (installation needed) [1412.7420] *
# iww=Improved Weizsaecker-Williams Approx.[hep-ph/9310350] *
# eva=Effective W/Z/A Approx. [2111.02442] *
# edff=EDFF in gamma-UPC [eq.(11) in 2207.03012] *
# chff=ChFF in gamma-UPC [eq.(13) in 2207.03012] *
# none=No PDF, same as lhapdf with lppx=0 *
#*********************************************************************
     none = pdlabel1 ! PDF type for beam #1
     none = pdlabel2 ! PDF type for beam #2
  230000 = lhaid ! if pdlabel=lhapdf, this is the lhapdf number
# To see heavy ion options: type "update ion_pdf"
#*********************************************************************
# Renormalization and factorization scales *
#*********************************************************************
  False = fixed_ren_scale ! if .true. use fixed ren scale
  False = fixed_fac_scale ! if .true. use fixed fac scale
  91.188 = scale ! fixed ren scale
  91.188 = dsqrt_q2fact1 ! fixed fact scale for pdf1
  91.188 = dsqrt_q2fact2 ! fixed fact scale for pdf2
  -1 = dynamical_scale_choice ! Choose one of the preselected dynamical choices
  1.0 = scalefact ! scale factor for event-by-event scales

#*********************************************************************
# Type and output format
#*********************************************************************
  False = gridpack !True = setting up the grid pack
  -1.0 = time_of_flight ! threshold (in mm) below which the invariant livetime is not written (-1 means not written)
  average = event_norm ! average/sum. Normalization of the weight in the LHEF
# To see MLM/CKKW merging options: type "update MLM" or "update CKKW"

#*********************************************************************
#
#*********************************************************************
# Phase-Space Optimization strategy (basic options)
#*********************************************************************
  0 = nhel ! using helicities importance sampling or not.
                             ! 0: sum over helicity, 1: importance sampling
  2 = sde_strategy ! default integration strategy (hep-ph/2021.00773)
                             ! 1 is old strategy (using amp square)
        ! 2 is new strategy (using only the denominator)
# To see advanced option for Phase-Space optimization: type "update psoptim"
#*********************************************************************
# Customization (custom cuts/scale/bias/...) *
# list of files containing fortran function that overwrite default *
#*********************************************************************
   = custom_fcts ! List of files containing user hook function
#*******************************
# Parton level cuts definition *
#*******************************
  0.0 = dsqrt_shat ! minimal shat for full process
#
#
#*********************************************************************
# BW cutoff (M+/-bwcutoff*Gamma) ! Define on/off-shell for "$" and decay
#*********************************************************************
  15.0 = bwcutoff ! (M+/-bwcutoff*Gamma)
#*********************************************************************
# Standard Cuts *
#*********************************************************************
# Minimum and maximum pt's (for max, -1 means no cut) *
#*********************************************************************
  20.0 = ptj ! minimum pt for the jets
  -1.0 = ptjmax ! maximum pt for the jets
  {} = pt_min_pdg ! pt cut for other particles (use pdg code). Applied on particle and anti-particle
  {} = pt_max_pdg ! pt cut for other particles (syntax e.g. {6: 100, 25: 50})
#*********************************************************************
# Minimum and maximum E's (in the center of mass frame) *
#*********************************************************************
  0.0 = ej ! minimum E for the jets
  0.0 = eb ! minimum E for the b
  0.0 = ea ! minimum E for the photons
  0.0 = el ! minimum E for the charged leptons
  -1.0 = ejmax ! maximum E for the jets
  -1.0 = ebmax ! maximum E for the b
  -1.0 = eamax ! maximum E for the photons
  -1.0 = elmax ! maximum E for the charged leptons
  {} = e_min_pdg ! E cut for other particles (use pdg code). Applied on particle and anti-particle
  {} = e_max_pdg ! E cut for other particles (syntax e.g. {6: 100, 25: 50})

#*********************************************************************
# Maximum and minimum absolute rapidity (for max, -1 means no cut) *
#*********************************************************************
  5.0 = etaj ! max rap for the jets
  {} = eta_min_pdg ! rap cut for other particles (use pdg code). Applied on particle and anti-particle
  {} = eta_max_pdg ! rap cut for other particles (syntax e.g. {6: 2.5, 23: 5})
#*********************************************************************
# Minimum and maximum DeltaR distance *
#*********************************************************************
  0.4 = drjj ! min distance between jets
  -1.0 = drjjmax ! max distance between jets
#*********************************************************************
# Minimum and maximum invariant mass for pairs *
#*********************************************************************
  0.0 = mmjj ! min invariant mass of a jet pair
  -1.0 = mmjjmax ! max invariant mass of a jet pair
  {} = mxx_min_pdg ! min invariant mass of a pair of particles X/X~ (e.g. {6:250})
  {'default': False} = mxx_only_part_antipart ! if True the invariant mass is applied only
                       ! to pairs of particle/antiparticle and not to pairs of the same pdg codes.
#*********************************************************************
# Inclusive cuts *
#*********************************************************************
  0.0 = ptheavy ! minimum pt for at least one heavy final state
  0.0 = xptj ! minimum pt for at least one jet
 #*********************************************************************
 # Control the pt's of the jets sorted by pt *
 #*********************************************************************
  0.0 = ptj1min ! minimum pt for the leading jet in pt
  0.0 = ptj2min ! minimum pt for the second jet in pt
  -1.0 = ptj1max ! maximum pt for the leading jet in pt
  -1.0 = ptj2max ! maximum pt for the second jet in pt
  0 = cutuse ! reject event if fails any (0) / all (1) jet pt cuts
 #*********************************************************************
 # Control the Ht(k)=Sum of k leading jets *
 #*********************************************************************
  0.0 = htjmin ! minimum jet HT=Sum(jet pt)
  -1.0 = htjmax ! maximum jet HT=Sum(jet pt)
  0.0 = ihtmin !inclusive Ht for all partons (including b)
  -1.0 = ihtmax !inclusive Ht for all partons (including b)
 #*********************************************************************
 # WBF cuts *
 #*********************************************************************
  0.0 = xetamin ! minimum rapidity for two jets in the WBF case
  0.0 = deltaeta ! minimum rapidity for two jets in the WBF case
#*********************************************************************
# maximal pdg code for quark to be considered as a light jet *
# (otherwise b cuts are applied) *
#*********************************************************************
  4 = maxjetflavor ! Maximum jet pdg code
#*********************************************************************
#
#*********************************************************************
# Store info for systematics studies *
# WARNING: Do not use for interference type of computation *
#*********************************************************************
  False = use_syst ! Enable systematics studies
#
  systematics = systematics_program ! none, systematics [python], SysCalc [depreceted, C++]
  ['--mur=0.5,1,2', '--muf=0.5,1,2', '--pdf=errorset'] = systematics_arguments ! see: https://cp3.irmp.ucl.ac.be/projects/madgraph/wiki/Systematics#Systematicspythonmodule

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

When running this in 3.5.2, I have a much better error message:

> Zero result detected: No Phase Space. Please check particle masses.

Which is indeed correct. So I guess that we know do catch the error in a better way but in any case the real issue is that you ask for a cross-section which is zero.

Cheers,

Olivier

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