Command "generate_events -f" interrupted with error: ValueError : could not convert string to float: ''

Asked by 王世钰

Hello,

I'm using SM model and I'm trying to generate p p > t t~ , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > e- ve~)with 500k event. Here is the main information

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
generate p p > t t~ , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > e- ve~\
)
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~
add process p p > t t~ , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > j j\
)
add process p p > t t~ , (t > w+ b, w+ > j j), (t~ > w- b~, w- > e- ve\
~)
add process p p > t t~ , (t > w+ b, w+ > j j), (t~ > w- b~, w- > j j)
add process p p > t t~ j , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > e\
- ve~)
add process p p > t t~ j , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > j\
 j)
add process p p > t t~ j , (t > w+ b, w+ > j j), (t~ > w- b~, w- > e- \
ve~)
add process p p > t t~ j , (t > w+ b, w+ > j j), (t~ > w- b~, w- > j j\
)
add process p p > t t~ j j , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- >\
 e- ve~)
add process p p > t t~ j j , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- >\
 j j)
add process p p > t t~ j j , (t > w+ b, w+ > j j), (t~ > w- b~, w- > e\
- ve~)
add process p p > t t~ j j , (t > w+ b, w+ > j j), (t~ > w- b~, w- > j\
 j)
output /home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1
launch

but, I get this error

Error when reading /home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/SubProcesses/P10_gq_ttxgq_t_wpb_wp_lvl_tx_wmbx_wm_qq/G6.0022d0/results.dat
Command "generate_events -f" interrupted with error:
ValueError : could not convert string to float: ''
Please report this bug on https://bugs.launchpad.net/mg5amcnlo
More information is found in '/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/run_02_tag_1_debug.log'.
Please attach this file to your report.

and, this is the run_02_tag_1_debug.log:
#************************************************************
#* MadGraph5_aMC@NLO/MadEvent *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 3.5.1 *
#* *
#* 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 -f
Traceback (most recent call last):
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/sum_html.py", line 298, in secure_float
    return float(d)
           ^^^^^^^^
ValueError: could not convert string to float: 'end-code'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/extended_cmd.py", line 1543, in onecmd
    return self.onecmd_orig(line, **opt)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/extended_cmd.py", line 1492, in onecmd_orig
    return func(arg, **opt)
           ^^^^^^^^^^^^^^^^
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/madevent_interface.py", line 2403, in do_generate_events
    self.run_generate_events(switch_mode, args)
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/common_run_interface.py", line 7656, in new_fct
    original_fct(obj, *args, **opts)
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/madevent_interface.py", line 2601, in run_generate_events
    self.exec_cmd('refine %s' % nb_event, postcmd=False)
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/extended_cmd.py", line 1572, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/extended_cmd.py", line 1492, in onecmd_orig
    return func(arg, **opt)
           ^^^^^^^^^^^^^^^^
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/madevent_interface.py", line 3650, in do_refine
    combine_runs.CombineRuns(self.me_dir)
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/combine_runs.py", line 80, in __init__
    self.sum_multichannel(channel)
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/combine_runs.py", line 102, in sum_multichannel
    results.add_results(name=alphabet[i % 26] + str((i+1)//26) ,
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/sum_html.py", line 434, in add_results
    oneresult.read_results(filepath)
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/sum_html.py", line 305, in read_results
    data = [secure_float(d) for d in line.split()]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/sum_html.py", line 305, in <listcomp>
    data = [secure_float(d) for d in line.split()]
            ^^^^^^^^^^^^^^^
  File "/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/bin/internal/sum_html.py", line 302, in secure_float
    return float(m.group(1))*10**(float(m.group(2)))
           ^^^^^^^^^^^^^^^^^
ValueError: could not convert string to float: ''
                              Run Options
                              -----------
               stdout_level : None

                         MadEvent Options
                         ----------------
     automatic_html_opening : False (user set)
        notification_center : True
                   run_mode : 2
              cluster_queue : None
               cluster_time : None
               cluster_size : 100
             cluster_memory : None
                    nb_core : 48 (user set)
          cluster_temp_path : None

                      Configuration Options
                      ---------------------
               pythia8_path : /home/wsy/wsy/MG5_aMC_v3_5_1/HEPTools/pythia8 (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 : /home/wsy/wsy/MG5_aMC_v3_5_1/Delphes (user set)
        exrootanalysis_path : None (user set)
               syscalc_path : None (user set)
                 rivet_path : None
                  yoda_path : None
                     lhapdf : /home/wsy/wsy/MG5_aMC_v3_5_1/HEPTools/lhapdf6_py3/bin/lhapdf-config (user set)
                 lhapdf_py2 : None
                 lhapdf_py3 : /home/wsy/wsy/MG5_aMC_v3_5_1/HEPTools/lhapdf6_py3/bin/lhapdf-config (user set)
                    timeout : 0 (user set)
              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 : 0 (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
generate p p > t t~ , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > e- ve~\
)
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~
add process p p > t t~ , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > j j\
)
add process p p > t t~ , (t > w+ b, w+ > j j), (t~ > w- b~, w- > e- ve\
~)
add process p p > t t~ , (t > w+ b, w+ > j j), (t~ > w- b~, w- > j j)
add process p p > t t~ j , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > e\
- ve~)
add process p p > t t~ j , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > j\
 j)
add process p p > t t~ j , (t > w+ b, w+ > j j), (t~ > w- b~, w- > e- \
ve~)
add process p p > t t~ j , (t > w+ b, w+ > j j), (t~ > w- b~, w- > j j\
)
add process p p > t t~ j j , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- >\
 e- ve~)
add process p p > t t~ j j , (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- >\
 j j)
add process p p > t t~ j j , (t > w+ b, w+ > j j), (t~ > w- b~, w- > e\
- ve~)
add process p p > t t~ j j , (t > w+ b, w+ > j j), (t~ > w- b~, w- > j\
 j)
output /home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1
######################################################################
## PARAM_CARD AUTOMATICALY GENERATED BY MG5 ####
######################################################################
###################################
## INFORMATION FOR MASS
###################################
BLOCK MASS #
      5 4.700000e+00 # mb
      6 1.730000e+02 # mt
      15 1.777000e+00 # mta
      23 9.118800e+01 # mz
      25 1.250000e+02 # mh
      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
      24 8.041900e+01 # w+ : cmath.sqrt(mz__exp__2/2. + cmath.sqrt(mz__exp__4/4. - (aew*cmath.pi*mz__exp__2)/(gf*sqrt__2)))
###################################
## INFORMATION FOR SMINPUTS
###################################
BLOCK SMINPUTS #
      1 1.325070e+02 # aewm1
      2 1.166390e-05 # gf
      3 1.300000e-01 # as (note that parameter not used if you use a pdf set)
###################################
## INFORMATION FOR YUKAWA
###################################
BLOCK YUKAWA #
      5 4.700000e+00 # ymb
      6 1.730000e+02 # ymt
      15 1.777000e+00 # ymtau
###################################
## INFORMATION FOR DECAY
###################################
DECAY 6 1.491500e+00 # wt
DECAY 23 2.441404e+00 # wz
DECAY 24 2.047600e+00 # ww
DECAY 25 6.382339e-03 # wh
DECAY 1 0.000000e+00 # d : 0.0
DECAY 2 0.000000e+00 # u : 0.0
DECAY 3 0.000000e+00 # s : 0.0
DECAY 4 0.000000e+00 # c : 0.0
DECAY 5 0.000000e+00 # b : 0.0
DECAY 11 0.000000e+00 # e- : 0.0
DECAY 12 0.000000e+00 # ve : 0.0
DECAY 13 0.000000e+00 # mu- : 0.0
DECAY 14 0.000000e+00 # vm : 0.0
DECAY 15 0.000000e+00 # ta- : 0.0
DECAY 16 0.000000e+00 # vt : 0.0
DECAY 21 0.000000e+00 # g : 0.0
DECAY 22 0.000000e+00 # a : 0.0

#*********************************************************************
# 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 *
#*********************************************************************
  500000 = 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 *
#*********************************************************************
     1 = lpp1 ! beam 1 type
     1 = lpp2 ! beam 2 type
     6500.0 = ebeam1 ! beam 1 total energy in GeV
     6500.0 = ebeam2 ! beam 2 total energy in GeV
# To see polarised beam options: type "update beam_pol"

#*********************************************************************
# 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 *
#*********************************************************************
     nn23lo1 = pdlabel ! PDF set
     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
#*********************************************************************
# Matching parameter (MLM only)
#*********************************************************************
 1 = ickkw ! 0 no matching, 1 MLM
 1.0 = alpsfact ! scale factor for QCD emission vx
 False = chcluster ! cluster only according to channel diag
 4 = asrwgtflavor ! highest quark flavor for a_s reweight
 True = auto_ptj_mjj ! Automatic setting of ptj and mjj if xqcut >0
                                   ! (turn off for VBF and single top processes)
 100.0 = xqcut ! minimum kt jet measure between partons

#***********************************************************************
# Turn on either the ktdurham or ptlund cut to activate *
# CKKW(L) merging with Pythia8 [arXiv:1410.3012, arXiv:1109.4829] *
#***********************************************************************
 -1.0 = ktdurham
 0.4 = dparameter
 -1.0 = ptlund
 1, 2, 3, 4, 5, 6, 21 = pdgs_for_merging_cut ! PDGs for two cuts above

#*********************************************************************
#
#*********************************************************************
# Phase-Space Optimization strategy (basic options)
#*********************************************************************
   0 = nhel ! using helicities importance sampling or not.
                             ! 0: sum over helicity, 1: importance sampling
   1 = 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)
 #*********************************************************************
 # Apply pt/E/eta/dr/mij/kt_durham cuts on decay products or not
 # (note that etmiss/ptll/ptheavy/ht/sorted cuts always apply)
 #*********************************************************************
   True = cut_decays ! Cut decay products
#*********************************************************************
# Standard Cuts *
#*********************************************************************
# Minimum and maximum pt's (for max, -1 means no cut) *
#*********************************************************************
 100.0 = ptj ! minimum pt for the jets
 100.0 = ptb ! minimum pt for the b
 25.0 = ptl ! minimum pt for the charged leptons
 0.0 = misset ! minimum missing Et (sum of neutrino's momenta)
 -1.0 = ptjmax ! maximum pt for the jets
 -1.0 = ptbmax ! maximum pt for the b
 -1.0 = ptlmax ! maximum pt for the charged leptons
 -1.0 = missetmax ! maximum missing Et (sum of neutrino's momenta)
 {} = 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})
#
# For display option for energy cut in the partonic center of mass frame type 'update ecut'
#
#*********************************************************************
# Maximum and minimum absolute rapidity (for max, -1 means no cut) *
#*********************************************************************
 4.5 = etaj ! max rap for the jets
 4.5 = etab ! max rap for the b
 2.5 = etal ! max rap for the charged leptons
 0.0 = etabmin ! min rap for the b
 0.0 = etalmin ! main rap for the charged leptons
 {} = 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
 0.4 = drbb ! min distance between b's
 0.4 = drll ! min distance between leptons
 0.4 = drbj ! min distance between b and jet
 0.4 = drjl ! min distance between jet and lepton
 0.4 = drbl ! min distance between b and lepton
 -1.0 = drjjmax ! max distance between jets
 -1.0 = drbbmax ! max distance between b's
 -1.0 = drllmax ! max distance between leptons
 -1.0 = drbjmax ! max distance between b and jet
 -1.0 = drjlmax ! max distance between jet and lepton
 -1.0 = drblmax ! max distance between b and lepton
#*********************************************************************
# Minimum and maximum invariant mass for pairs *
#*********************************************************************
 0.0 = mmjj ! min invariant mass of a jet pair
 0.0 = mmbb ! min invariant mass of a b pair
 0.0 = mmll ! min invariant mass of l+l- (same flavour) lepton pair
 -1.0 = mmjjmax ! max invariant mass of a jet pair
 -1.0 = mmbbmax ! max invariant mass of a b pair
 -1.0 = mmllmax ! max invariant mass of l+l- (same flavour) lepton 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.
 #*********************************************************************
 # Minimum and maximum invariant mass for all letpons *
 #*********************************************************************
 0.0 = mmnl ! min invariant mass for all letpons (l+- and vl)
 -1.0 = mmnlmax ! max invariant mass for all letpons (l+- and vl)
 #*********************************************************************
 # Minimum and maximum pt for 4-momenta sum of leptons / neutrino *
 # for pair of lepton includes only same flavor, opposite charge
 #*********************************************************************
 0.0 = ptllmin ! Minimum pt for 4-momenta sum of leptons(l and vl)
 -1.0 = ptllmax ! Maximum pt for 4-momenta sum of leptons(l and vl)
#*********************************************************************
# Inclusive cuts *
#*********************************************************************
 0.0 = xptj ! minimum pt for at least one jet
 0.0 = xptb ! minimum pt for at least one b
 0.0 = xptl ! minimum pt for at least one charged lepton
 #*********************************************************************
 # 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
 0.0 = ptj3min ! minimum pt for the third jet in pt
 0.0 = ptj4min ! minimum pt for the fourth 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
 -1.0 = ptj3max ! maximum pt for the third jet in pt
 -1.0 = ptj4max ! maximum pt for the fourth jet in pt
 0 = cutuse ! reject event if fails any (0) / all (1) jet pt cuts
 #*********************************************************************
 # Control the pt's of leptons sorted by pt *
 #*********************************************************************
 0.0 = ptl1min ! minimum pt for the leading lepton in pt
 0.0 = ptl2min ! minimum pt for the second lepton in pt
 -1.0 = ptl1max ! maximum pt for the leading lepton in pt
 -1.0 = ptl2max ! maximum pt for the second lepton in pt
 #*********************************************************************
 # Control the Ht(k)=Sum of k leading jets *
 #*********************************************************************
 1000.0 = 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)
 0.0 = ht2min ! minimum Ht for the two leading jets
 0.0 = ht3min ! minimum Ht for the three leading jets
 0.0 = ht4min ! minimum Ht for the four leading jets
 -1.0 = ht2max ! maximum Ht for the two leading jets
 -1.0 = ht3max ! maximum Ht for the three leading jets
 -1.0 = ht4max ! maximum Ht for the four leading jets
 #*********************************************************************
 # 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 *
#*********************************************************************
   True = 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', '--alps=0.5,1,2'] = systematics_arguments ! see: https://cp3.irmp.ucl.ac.be/projects/madgraph/wiki/Systematics#Systematicspythonmodule

Do you have any good solutions about this?

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王世钰
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Olivier Mattelaer (olivier-mattelaer) said :
#2

For MLM generation, this is typically more efficient to use MadSpin for handling the decay of the top.
Additionally, this might be the issue here but to be sure one need to look at the log file of the following directory
/home/wsy/wsy/MG5_aMC_v3_5_1/wsy5/SM/os/ttbar1/SubProcesses/P10_gq_ttxgq_t_wpb_wp_lvl_tx_wmbx_wm_qq/G6.0022d0/
where the reason for the crash will be reported, but the reason is likely that a gluon is emitted by the top and that the MLM algorithm is unclear if this should be (or not) be handle as decay radiation or not.

So can you try without the decay (and let madspin do the decay?)

Cheers,

Olivier

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王世钰 (wsy-123) said :
#3

Thank you very much for your reply,
I tried using madspin to generate the process I wanted, such as:
p p > t t~, (t > w+ b, w+ > j j), (t~ > w- b~, w- > j j)
p p > t t~, (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > j j)
p p > t t~, (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > e- ve~)
p p > t t~, (t > w+ b, w+ > j j), (t~ > w- b~, w- > e- ve~)
p p > t t~ j, (t > w+ b, w+ > j j), (t~ > w- b~, w- > j j)
p p > t t~ j, (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > j j)
p p > t t~ j, (t > w+ b, w+ > e+ ve), (t~ > w- b~, w- > e- ve~)
p p > t t~ j, (t > w+ b, w+ > j j), (t~ > w- b~, w- > e- ve~)
First, when generating, I wrote it like this:
p p > t t~
p p > t t~ j
Then I added the following decay processes in madspin:
decay t > w+ b, w+ > j j
decay t > w+ b, w+ > e+ ve
decay t~ > w- b~, w- > j j
decay t~ > w- b~, w- > e- ve~
The problem is that the information on the standard cut for final state particles is missing in the run_card, so I manually added the corresponding standard cut in the run_card, such as: 100=ptl, 2.5=etal, to compare with the results run without madspin.
Now I find that the cross section produced with madspin (0.21) is several orders of magnitude larger than the cross section produced without madspin (0.00036). Is it because these cuts are not fully effective, or is there another reason?

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Olivier Mattelaer (olivier-mattelaer) said :
#4

If you are using the default mode of madspin, no cut are possible (especially since branching ratio information are used to get the cross-section after decay).

If you use some of the other mode of madspin, some cut are possible but all the cut will be applied in the center of mass frame of the decaying particle and not in the lab frame. Making impossible to apply cut like 100=ptl, 2.5=etal

In any case, the cut specify within the run_card of the production will never be consider by madspin.

Cheers,

Olivier

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王世钰 (wsy-123) said :
#5

Thank you very much. This solved my question. Cheers!