ee> ee [real=QED] process with v2_4_0 lauch interrepted with "index out of range"

Asked by Himangshu Neog on 2019-07-03

Hi,
I am new to Madgraph and trying to look at the process e- e- > e- e- [real= QED] process. I can only find mg5_v2_4_0 (and v2_3_3) which work for QED NLO processes. Since I can't compile (using make command) CutTools, IREGI and StdHEP for this version, I copied the working ones from v2_6_5 to get rid of the initial errors from CutTools compilation fails. I am getting this error during launch:
INFO: Starting run
INFO: Compiling the code
INFO: Lepton-Lepton collision: Ignoring 'pdlabel' and 'lhaid' in the run_card.
INFO: Compiling source...
INFO: ...done, continuing with P* directories
INFO: Compiling directories...
INFO: Compiling on 8 cores
INFO: Compiling P0_emem_emem...
STOP 1
Note: The following floating-point exceptions are signalling: IEEE_INVALID_FLAG
STOP 1
INFO: P0_emem_emem done.
INFO: Checking test output:
INFO: P0_emem_emem
INFO: Result for test_ME:
INFO: Passed.
INFO: Result for test_MC:
INFO: Passed.
INFO: Starting run
INFO: Using 8 cores
INFO: Cleaning previous results
INFO: Generating events without running the shower.
WARNING: No integration channels found for contribution P0_emem_emem
INFO: Setting up grids
INFO: Idle: 0, Running: 0, Completed: 0 [ current time: 17h35 ]
INFO: Computing upper envelope
INFO: Idle: 0, Running: 0, Completed: 0 [ current time: 17h35 ]
Command "launch auto " interrupted with error:
IndexError : list index out of range
Please report this bug on https://bugs.launchpad.net/mg5amcnlo

The corresponding debug file is :#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.4.0.beta 2016-04-06 *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* and *
#* http://amcatnlo.cern.ch *
#* *
#************************************************************
#* *
#* Command File for aMCatNLO *
#* *
#* run as ./bin/aMCatNLO.py filename *
#* *
#************************************************************
launch auto
Traceback (most recent call last):
  File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/extended_cmd.py", line 1009, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/extended_cmd.py", line 964, in onecmd_orig
    return func(arg, **opt)
  File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/amcatnlo_run_interface.py", line 1205, in do_launch
    evt_file = self.run(mode, options)
  File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/amcatnlo_run_interface.py", line 1433, in run
    jobs_to_collect,mint_step,mode,mode_dict[mode],fixed_order=False)
  File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/amcatnlo_run_interface.py", line 1651, in collect_the_results
    jobs_to_run_new=self.update_jobs_to_run(req_acc,integration_step,jobs_to_run,fixed_order)
  File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/amcatnlo_run_interface.py", line 1836, in update_jobs_to_run
    jobs[i]['nevents'] += 1
IndexError: list index out of range
Value of current Options:
              text_editor : None
      notification_center : True
                    pjfry : None
       cluster_local_path : None
       group_subprocesses : Auto
ignore_six_quark_processes : False
    loop_optimized_output : True
    cluster_status_update : (600, 30)
               hepmc_path : None
              auto_update : 7
             pythia8_path : None
                hwpp_path : None
low_mem_multicore_nlo_generation : False
                    golem : None
          pythia-pgs_path : None
                  td_path : None
             delphes_path : None
              thepeg_path : None
             cluster_type : condor
      exrootanalysis_path : None
                      OLP : MadLoop
                 applgrid : applgrid-config
               eps_viewer : None
                  fastjet : None
                 run_mode : 2
              web_browser : None
   automatic_html_opening : False
        cluster_temp_path : None
             cluster_size : 100
            cluster_queue : None
             syscalc_path : None
         madanalysis_path : None
                   lhapdf : lhapdf-config
             stdout_level : 20
            f2py_compiler : None
                    ninja : ./HEPTools/lib
                  amcfast : amcfast-config
       cluster_retry_wait : 300
      output_dependencies : external
         fortran_compiler : None
                  nb_core : 8
         loop_color_flows : False
                  samurai : None
         cluster_nb_retry : 1
                 mg5_path : /Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta
                  timeout : 60
                    gauge : Feynman
      complex_mass_scheme : False
             cpp_compiler : None
   max_npoint_for_channel : 0
#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.4.0.beta 2016-04-06 *
#* *
#* 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 loop_optimized_output True
set loop_color_flows False
set gauge unitary
set complex_mass_scheme False
set max_npoint_for_channel 0
import model sm
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~
import model loop_qcd_qed_sm
define p = 21 2 4 1 3 -2 -4 -1 -3 5 -5 # pass to 5 flavors
define j = p
generate e- e- > e- e- [real=QED]
output eeee
######################################################################
## PARAM_CARD AUTOMATICALY GENERATED BY MG5 FOLLOWING UFO MODEL ####
######################################################################
## ##
## Width set on Auto will be computed following the information ##
## present in the decay.py files of the model. ##
## See arXiv:1402.1178 for more details. ##
## ##
######################################################################

###################################
## INFORMATION FOR LOOP
###################################
Block loop
  666 1.000000e+03 # MU_R

###################################
## INFORMATION FOR MASS
###################################
Block mass
    6 1.743000e+02 # MT
   23 9.118800e+01 # MZ
   24 8.041900e+01 # MW
   25 1.200000e+02 # MH
## Dependent parameters, given by model restrictions.
## Those values should be edited following the
## analytical expression. MG5 ignores those values
## but they are important for interfacing the output of MG5
## to external program such as Pythia.
  1 0.000000 # d : 0.0
  2 0.000000 # u : 0.0
  3 0.000000 # s : 0.0
  4 0.000000 # c : 0.0
  5 0.000000 # b : 0.0
  11 0.000000 # e- : 0.0
  12 0.000000 # ve : 0.0
  13 0.000000 # mu- : 0.0
  14 0.000000 # vm : 0.0
  15 0.000000 # ta- : 0.0
  16 0.000000 # vt : 0.0
  21 0.000000 # g : 0.0
  22 0.000000 # a : 0.0
  9000002 91.188000 # ghz : MZ
  9000003 80.419000 # ghwp : MW
  9000004 80.419000 # ghwm : MW
  250 91.188000 # g0 : MZ
  251 80.419000 # g+ : MW

###################################
## INFORMATION FOR SMINPUTS
###################################
Block sminputs
    1 1.325070e+02 # aEWM1
    3 1.180000e-01 # aS

###################################
## INFORMATION FOR YUKAWA
###################################
Block yukawa
    6 1.743000e+02 # ymt

###################################
## INFORMATION FOR DECAY
###################################
DECAY 6 1.354080e+00 # WT
DECAY 23 2.428230e+00 # WZ
DECAY 24 2.028440e+00 # WW
DECAY 25 3.514960e-03 # WH
## Dependent parameters, given by model restrictions.
## Those values should be edited following the
## analytical expression. MG5 ignores those values
## but they are important for interfacing the output of MG5
## to external program such as Pythia.
DECAY 1 0.000000 # d : 0.0
DECAY 2 0.000000 # u : 0.0
DECAY 3 0.000000 # s : 0.0
DECAY 4 0.000000 # c : 0.0
DECAY 5 0.000000 # b : 0.0
DECAY 11 0.000000 # e- : 0.0
DECAY 12 0.000000 # ve : 0.0
DECAY 13 0.000000 # mu- : 0.0
DECAY 14 0.000000 # vm : 0.0
DECAY 15 0.000000 # ta- : 0.0
DECAY 16 0.000000 # vt : 0.0
DECAY 21 0.000000 # g : 0.0
DECAY 22 0.000000 # a : 0.0
DECAY 250 2.428230 # g0 : WZ
DECAY 251 2.028440 # g+ : WW
#===========================================================
# QUANTUM NUMBERS OF NEW STATE(S) (NON SM PDG CODE)
#===========================================================

Block QNUMBERS 250 # g0
        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)
Block QNUMBERS 251 # g+
        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)
#***********************************************************************
# MadGraph5_aMC@NLO *
# *
# run_card.dat aMC@NLO *
# *
# This file is used to set the parameters of the run. *
# *
# Some notation/conventions: *
# *
# Lines starting with a hash (#) are info or comments *
# *
# mind the format: value = variable ! comment *
# *
# Some of the values of variables can be list. These can either be *
# comma or space separated. *
#***********************************************************************
#
#*******************
# Running parameters
#*******************
#
#***********************************************************************
# Tag name for the run (one word) *
#***********************************************************************
  tag_1 = run_tag ! name of the run
#***********************************************************************
# Number of LHE events (and their normalization) and the required *
# (relative) accuracy on the Xsec. *
# These values are ignored for fixed order runs *
#***********************************************************************
 10000 = nevents ! Number of unweighted events requested
 -1.0 = req_acc ! Required accuracy (-1=auto determined from nevents)
 -1 = nevt_job! Max number of events per job in event generation.
                 ! (-1= no split).
#***********************************************************************
# Normalize the weights of LHE events such that they sum or average to *
# the total cross section *
#***********************************************************************
 average = event_norm ! average or sum
#***********************************************************************
# Number of points per itegration channel (ignored for aMC@NLO runs) *
#***********************************************************************
 0.01 = req_acc_FO ! Required accuracy (-1=ignored, and use the
                     ! number of points and iter. below)
# These numbers are ignored except if req_acc_FO is equal to -1
 5000 = npoints_FO_grid ! number of points to setup grids
 4 = niters_FO_grid ! number of iter. to setup grids
 10000 = npoints_FO ! number of points to compute Xsec
 6 = niters_FO ! number of iter. to compute Xsec
#***********************************************************************
# Random number seed *
#***********************************************************************
 0 = iseed ! rnd seed (0=assigned automatically=default))
#***********************************************************************
# Collider type and energy *
#***********************************************************************
 0 = lpp1 ! beam 1 type (0 = no PDF)
 0 = lpp2 ! beam 2 type (0 = no PDF)
 500.0 = ebeam1 ! beam 1 energy in GeV
 500.0 = ebeam2 ! beam 2 energy in GeV
#***********************************************************************
# PDF choice: this automatically fixes also alpha_s(MZ) and its evol. *
#***********************************************************************
 nn23nlo = pdlabel ! PDF set
 244600 = lhaid ! If pdlabel=lhapdf, this is the lhapdf number. Only
              ! numbers for central PDF sets are allowed. Can be a list;
              ! PDF sets beyond the first are included via reweighting.
#***********************************************************************
# Include the NLO Monte Carlo subtr. terms for the following parton *
# shower (HERWIG6 | HERWIGPP | PYTHIA6Q | PYTHIA6PT | PYTHIA8) *
# WARNING: PYTHIA6PT works only for processes without FSR!!!! *
#***********************************************************************
  HERWIG6 = parton_shower
  1.0 = shower_scale_factor ! multiply default shower starting
                                  ! scale by this factor
#***********************************************************************
# Renormalization and factorization scales *
# (Default functional form for the non-fixed scales is the sum of *
# the transverse masses divided by two of all final state particles *
# and partons. This can be changed in SubProcesses/set_scales.f or via *
# dynamical_scale_choice option) *
#***********************************************************************
 False = fixed_ren_scale ! if .true. use fixed ren scale
 False = fixed_fac_scale ! if .true. use fixed fac scale
 91.118 = muR_ref_fixed ! fixed ren reference scale
 91.118 = muF_ref_fixed ! fixed fact reference scale
 -1 = dynamical_scale_choice ! Choose one (or more) of the predefined
           ! dynamical choices. Can be a list; scale choices beyond the
           ! first are included via reweighting
 1.0 = muR_over_ref ! ratio of current muR over reference muR
 1.0 = muF_over_ref ! ratio of current muF over reference muF
#***********************************************************************
# Reweight variables for scale dependence and PDF uncertainty *
#***********************************************************************
 1.0, 2.0, 0.5 = rw_rscale ! muR factors to be included by reweighting
 1.0, 2.0, 0.5 = rw_fscale ! muF factors to be included by reweighting
 True = reweight_scale ! Reweight to get scale variation using the
            ! rw_rscale and rw_fscale factors. Should be a list of
            ! booleans of equal length to dynamical_scale_choice to
            ! specify for which choice to include scale dependence.
 False = reweight_PDF ! Reweight to get PDF uncertainty. Should be a
            ! list booleans of equal length to lhaid to specify for
            ! which PDF set to include the uncertainties.
#***********************************************************************
# Store reweight information in the LHE file for off-line model- *
# parameter reweighting at NLO+PS accuracy *
#***********************************************************************
 False = store_rwgt_info ! Store info for reweighting in LHE file
#***********************************************************************
# ickkw parameter: *
# 0: No merging *
# 3: FxFx Merging - WARNING! Applies merging only at the hard-event *
# level. After showering an MLM-type merging should be applied as *
# well. See http://amcatnlo.cern.ch/FxFx_merging.htm for details. *
# 4: UNLOPS merging (with pythia8 only). No interface from within *
# MG5_aMC available, but available in Pythia8. *
# -1: NNLL+NLO jet-veto computation. See arxiv:1412.8408 [hep-ph]. *
#***********************************************************************
 0 = ickkw
#***********************************************************************
#
#***********************************************************************
# BW cutoff (M+/-bwcutoff*Gamma). Determines which resonances are *
# written in the LHE event file *
#***********************************************************************
 15.0 = bwcutoff
#***********************************************************************
# Cuts on the jets. Jet clustering is performed by FastJet. *
# - When matching to a parton shower, these generation cuts should be *
# considerably softer than the analysis cuts. *
# - More specific cuts can be specified in SubProcesses/cuts.f *
#***********************************************************************
  1.0 = jetalgo ! FastJet jet algorithm (1=kT, 0=C/A, -1=anti-kT)
  0.7 = jetradius ! The radius parameter for the jet algorithm
 10.0 = ptj ! Min jet transverse momentum
 -1.0 = etaj ! Max jet abs(pseudo-rap) (a value .lt.0 means no cut)
#***********************************************************************
# Cuts on the charged leptons (e+, e-, mu+, mu-, tau+ and tau-) *
# More specific cuts can be specified in SubProcesses/cuts.f *
#***********************************************************************
  0.0 = ptl ! Min lepton transverse momentum
 -1.0 = etal ! Max lepton abs(pseudo-rap) (a value .lt.0 means no cut)
  0.0 = drll ! Min distance between opposite sign lepton pairs
  0.0 = drll_sf ! Min distance between opp. sign same-flavor lepton pairs
  0.0 = mll ! Min inv. mass of all opposite sign lepton pairs
 30.0 = mll_sf ! Min inv. mass of all opp. sign same-flavor lepton pairs
#***********************************************************************
# Photon-isolation cuts, according to hep-ph/9801442. When ptgmin=0, *
# all the other parameters are ignored. *
# More specific cuts can be specified in SubProcesses/cuts.f *
#***********************************************************************
 20.0 = ptgmin ! Min photon transverse momentum
 -1.0 = etagamma ! Max photon abs(pseudo-rap)
  0.4 = R0gamma ! Radius of isolation code
  1.0 = xn ! n parameter of eq.(3.4) in hep-ph/9801442
  1.0 = epsgamma ! epsilon_gamma parameter of eq.(3.4) in hep-ph/9801442
 True = isoEM ! isolate photons from EM energy (photons and leptons)
#***********************************************************************
# For aMCfast+APPLGRID use in PDF fitting (http://amcfast.hepforge.org)*
#***********************************************************************
 0 = iappl ! aMCfast switch (0=OFF, 1=prepare grids, 2=fill grids)
#***********************************************************************

I am using macOS mojave for the run. If you think I should use any "development" branch for QED, let me know why one (i have tried a few and they don't let me run QED loops)

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
Assignee:
davide.pagani.85 Edit question
Last query:
2019-07-08
Last reply:
2019-07-08

Hi,

Here I'm confused about what you are trying to do:

1) you said " I can only find mg5_v2_4_0 (and v2_3_3) which work for QED NLO processes. "
Those version does NOT support QED NLO. The only version with some support of QED NLO is 3.0.1
(publicly available on this website)

2) "e- e- > e- e- [real= QED] " is not QED NLO. (this is not the correct syntax for that)
2.1) real=QED means that you ask ONLY the real contribution (one of the three contribution to the NLO computation). So in particular such syntax excludes the loop
2.2) you can not use/set "e- e- > e- e-" as a process for QED NLO.

3) I might be wrong here, but I have the feeling that you want to do NLO+PS, this is not currently possible only fNLO is supported.

I would strongly suggest that you read arXiv:1804.10017<http://arXiv.org/abs/arXiv:1804.10017>
for more information on the topic.

Cheers,

Olivier

On 4 Jul 2019, at 00:57, Himangshu Neog <<email address hidden><mailto:<email address hidden>>> wrote:

New question #681782 on MadGraph5_aMC@NLO:
https://answers.launchpad.net/mg5amcnlo/+question/681782

Hi,
I am new to Madgraph and trying to look at the process e- e- > e- e- [real= QED] process. I can only find mg5_v2_4_0 (and v2_3_3) which work for QED NLO processes. Since I can't compile (using make command) CutTools, IREGI and StdHEP for this version, I copied the working ones from v2_6_5 to get rid of the initial errors from CutTools compilation fails. I am getting this error during launch:
INFO: Starting run
INFO: Compiling the code
INFO: Lepton-Lepton collision: Ignoring 'pdlabel' and 'lhaid' in the run_card.
INFO: Compiling source...
INFO: ...done, continuing with P* directories
INFO: Compiling directories...
INFO: Compiling on 8 cores
INFO: Compiling P0_emem_emem...
STOP 1
Note: The following floating-point exceptions are signalling: IEEE_INVALID_FLAG
STOP 1
INFO: P0_emem_emem done.
INFO: Checking test output:
INFO: P0_emem_emem
INFO: Result for test_ME:
INFO: Passed.
INFO: Result for test_MC:
INFO: Passed.
INFO: Starting run
INFO: Using 8 cores
INFO: Cleaning previous results
INFO: Generating events without running the shower.
WARNING: No integration channels found for contribution P0_emem_emem
INFO: Setting up grids
INFO: Idle: 0, Running: 0, Completed: 0 [ current time: 17h35 ]
INFO: Computing upper envelope
INFO: Idle: 0, Running: 0, Completed: 0 [ current time: 17h35 ]
Command "launch auto " interrupted with error:
IndexError : list index out of range
Please report this bug on https://bugs.launchpad.net/mg5amcnlo

The corresponding debug file is :#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.4.0.beta 2016-04-06 *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* and *
#* http://amcatnlo.cern.ch *
#* *
#************************************************************
#* *
#* Command File for aMCatNLO *
#* *
#* run as ./bin/aMCatNLO.py filename *
#* *
#************************************************************
launch auto
Traceback (most recent call last):
 File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/extended_cmd.py", line 1009, in onecmd
   return self.onecmd_orig(line, **opt)
 File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/extended_cmd.py", line 964, in onecmd_orig
   return func(arg, **opt)
 File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/amcatnlo_run_interface.py", line 1205, in do_launch
   evt_file = self.run(mode, options)
 File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/amcatnlo_run_interface.py", line 1433, in run
   jobs_to_collect,mint_step,mode,mode_dict[mode],fixed_order=False)
 File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/amcatnlo_run_interface.py", line 1651, in collect_the_results
   jobs_to_run_new=self.update_jobs_to_run(req_acc,integration_step,jobs_to_run,fixed_order)
 File "/Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta/madgraph/interface/amcatnlo_run_interface.py", line 1836, in update_jobs_to_run
   jobs[i]['nevents'] += 1
IndexError: list index out of range
Value of current Options:
             text_editor : None
     notification_center : True
                   pjfry : None
      cluster_local_path : None
      group_subprocesses : Auto
ignore_six_quark_processes : False
   loop_optimized_output : True
   cluster_status_update : (600, 30)
              hepmc_path : None
             auto_update : 7
            pythia8_path : None
               hwpp_path : None
low_mem_multicore_nlo_generation : False
                   golem : None
         pythia-pgs_path : None
                 td_path : None
            delphes_path : None
             thepeg_path : None
            cluster_type : condor
     exrootanalysis_path : None
                     OLP : MadLoop
                applgrid : applgrid-config
              eps_viewer : None
                 fastjet : None
                run_mode : 2
             web_browser : None
  automatic_html_opening : False
       cluster_temp_path : None
            cluster_size : 100
           cluster_queue : None
            syscalc_path : None
        madanalysis_path : None
                  lhapdf : lhapdf-config
            stdout_level : 20
           f2py_compiler : None
                   ninja : ./HEPTools/lib
                 amcfast : amcfast-config
      cluster_retry_wait : 300
     output_dependencies : external
        fortran_compiler : None
                 nb_core : 8
        loop_color_flows : False
                 samurai : None
        cluster_nb_retry : 1
                mg5_path : /Users/himangshuneog/Downloads/MG5_aMC_v2_4_0_beta
                 timeout : 60
                   gauge : Feynman
     complex_mass_scheme : False
            cpp_compiler : None
  max_npoint_for_channel : 0
#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.4.0.beta 2016-04-06 *
#* *
#* 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 loop_optimized_output True
set loop_color_flows False
set gauge unitary
set complex_mass_scheme False
set max_npoint_for_channel 0
import model sm
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~
import model loop_qcd_qed_sm
define p = 21 2 4 1 3 -2 -4 -1 -3 5 -5 # pass to 5 flavors
define j = p
generate e- e- > e- e- [real=QED]
output eeee
######################################################################
## PARAM_CARD AUTOMATICALY GENERATED BY MG5 FOLLOWING UFO MODEL ####
######################################################################
## ##
## Width set on Auto will be computed following the information ##
## present in the decay.py files of the model. ##
## See arXiv:1402.1178 for more details. ##
## ##
######################################################################

###################################
## INFORMATION FOR LOOP
###################################
Block loop
 666 1.000000e+03 # MU_R

###################################
## INFORMATION FOR MASS
###################################
Block mass
   6 1.743000e+02 # MT
  23 9.118800e+01 # MZ
  24 8.041900e+01 # MW
  25 1.200000e+02 # MH
## Dependent parameters, given by model restrictions.
## Those values should be edited following the
## analytical expression. MG5 ignores those values
## but they are important for interfacing the output of MG5
## to external program such as Pythia.
 1 0.000000 # d : 0.0
 2 0.000000 # u : 0.0
 3 0.000000 # s : 0.0
 4 0.000000 # c : 0.0
 5 0.000000 # b : 0.0
 11 0.000000 # e- : 0.0
 12 0.000000 # ve : 0.0
 13 0.000000 # mu- : 0.0
 14 0.000000 # vm : 0.0
 15 0.000000 # ta- : 0.0
 16 0.000000 # vt : 0.0
 21 0.000000 # g : 0.0
 22 0.000000 # a : 0.0
 9000002 91.188000 # ghz : MZ
 9000003 80.419000 # ghwp : MW
 9000004 80.419000 # ghwm : MW
 250 91.188000 # g0 : MZ
 251 80.419000 # g+ : MW

###################################
## INFORMATION FOR SMINPUTS
###################################
Block sminputs
   1 1.325070e+02 # aEWM1
   3 1.180000e-01 # aS

###################################
## INFORMATION FOR YUKAWA
###################################
Block yukawa
   6 1.743000e+02 # ymt

###################################
## INFORMATION FOR DECAY
###################################
DECAY 6 1.354080e+00 # WT
DECAY 23 2.428230e+00 # WZ
DECAY 24 2.028440e+00 # WW
DECAY 25 3.514960e-03 # WH
## Dependent parameters, given by model restrictions.
## Those values should be edited following the
## analytical expression. MG5 ignores those values
## but they are important for interfacing the output of MG5
## to external program such as Pythia.
DECAY 1 0.000000 # d : 0.0
DECAY 2 0.000000 # u : 0.0
DECAY 3 0.000000 # s : 0.0
DECAY 4 0.000000 # c : 0.0
DECAY 5 0.000000 # b : 0.0
DECAY 11 0.000000 # e- : 0.0
DECAY 12 0.000000 # ve : 0.0
DECAY 13 0.000000 # mu- : 0.0
DECAY 14 0.000000 # vm : 0.0
DECAY 15 0.000000 # ta- : 0.0
DECAY 16 0.000000 # vt : 0.0
DECAY 21 0.000000 # g : 0.0
DECAY 22 0.000000 # a : 0.0
DECAY 250 2.428230 # g0 : WZ
DECAY 251 2.028440 # g+ : WW
#===========================================================
# QUANTUM NUMBERS OF NEW STATE(S) (NON SM PDG CODE)
#===========================================================

Block QNUMBERS 250 # g0
       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)
Block QNUMBERS 251 # g+
       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)
#***********************************************************************
# MadGraph5_aMC@NLO *
# *
# run_card.dat aMC@NLO *
# *
# This file is used to set the parameters of the run. *
# *
# Some notation/conventions: *
# *
# Lines starting with a hash (#) are info or comments *
# *
# mind the format: value = variable ! comment *
# *
# Some of the values of variables can be list. These can either be *
# comma or space separated. *
#***********************************************************************
#
#*******************
# Running parameters
#*******************
#
#***********************************************************************
# Tag name for the run (one word) *
#***********************************************************************
 tag_1 = run_tag ! name of the run
#***********************************************************************
# Number of LHE events (and their normalization) and the required *
# (relative) accuracy on the Xsec. *
# These values are ignored for fixed order runs *
#***********************************************************************
10000 = nevents ! Number of unweighted events requested
-1.0 = req_acc ! Required accuracy (-1=auto determined from nevents)
-1 = nevt_job! Max number of events per job in event generation.
                ! (-1= no split).
#***********************************************************************
# Normalize the weights of LHE events such that they sum or average to *
# the total cross section *
#***********************************************************************
average = event_norm ! average or sum
#***********************************************************************
# Number of points per itegration channel (ignored for aMC@NLO runs) *
#***********************************************************************
0.01 = req_acc_FO ! Required accuracy (-1=ignored, and use the
                   ! number of points and iter. below)
# These numbers are ignored except if req_acc_FO is equal to -1
5000 = npoints_FO_grid ! number of points to setup grids
4 = niters_FO_grid ! number of iter. to setup grids
10000 = npoints_FO ! number of points to compute Xsec
6 = niters_FO ! number of iter. to compute Xsec
#***********************************************************************
# Random number seed *
#***********************************************************************
0 = iseed ! rnd seed (0=assigned automatically=default))
#***********************************************************************
# Collider type and energy *
#***********************************************************************
0 = lpp1 ! beam 1 type (0 = no PDF)
0 = lpp2 ! beam 2 type (0 = no PDF)
500.0 = ebeam1 ! beam 1 energy in GeV
500.0 = ebeam2 ! beam 2 energy in GeV
#***********************************************************************
# PDF choice: this automatically fixes also alpha_s(MZ) and its evol. *
#***********************************************************************
nn23nlo = pdlabel ! PDF set
244600 = lhaid ! If pdlabel=lhapdf, this is the lhapdf number. Only
             ! numbers for central PDF sets are allowed. Can be a list;
             ! PDF sets beyond the first are included via reweighting.
#***********************************************************************
# Include the NLO Monte Carlo subtr. terms for the following parton *
# shower (HERWIG6 | HERWIGPP | PYTHIA6Q | PYTHIA6PT | PYTHIA8) *
# WARNING: PYTHIA6PT works only for processes without FSR!!!! *
#***********************************************************************
 HERWIG6 = parton_shower
 1.0 = shower_scale_factor ! multiply default shower starting
                                 ! scale by this factor
#***********************************************************************
# Renormalization and factorization scales *
# (Default functional form for the non-fixed scales is the sum of *
# the transverse masses divided by two of all final state particles *
# and partons. This can be changed in SubProcesses/set_scales.f or via *
# dynamical_scale_choice option) *
#***********************************************************************
False = fixed_ren_scale ! if .true. use fixed ren scale
False = fixed_fac_scale ! if .true. use fixed fac scale
91.118 = muR_ref_fixed ! fixed ren reference scale
91.118 = muF_ref_fixed ! fixed fact reference scale
-1 = dynamical_scale_choice ! Choose one (or more) of the predefined
          ! dynamical choices. Can be a list; scale choices beyond the
          ! first are included via reweighting
1.0 = muR_over_ref ! ratio of current muR over reference muR
1.0 = muF_over_ref ! ratio of current muF over reference muF
#***********************************************************************
# Reweight variables for scale dependence and PDF uncertainty *
#***********************************************************************
1.0, 2.0, 0.5 = rw_rscale ! muR factors to be included by reweighting
1.0, 2.0, 0.5 = rw_fscale ! muF factors to be included by reweighting
True = reweight_scale ! Reweight to get scale variation using the
           ! rw_rscale and rw_fscale factors. Should be a list of
           ! booleans of equal length to dynamical_scale_choice to
           ! specify for which choice to include scale dependence.
False = reweight_PDF ! Reweight to get PDF uncertainty. Should be a
           ! list booleans of equal length to lhaid to specify for
           ! which PDF set to include the uncertainties.
#***********************************************************************
# Store reweight information in the LHE file for off-line model- *
# parameter reweighting at NLO+PS accuracy *
#***********************************************************************
False = store_rwgt_info ! Store info for reweighting in LHE file
#***********************************************************************
# ickkw parameter: *
# 0: No merging *
# 3: FxFx Merging - WARNING! Applies merging only at the hard-event *
# level. After showering an MLM-type merging should be applied as *
# well. See http://amcatnlo.cern.ch/FxFx_merging.htm for details. *
# 4: UNLOPS merging (with pythia8 only). No interface from within *
# MG5_aMC available, but available in Pythia8. *
# -1: NNLL+NLO jet-veto computation. See arxiv:1412.8408 [hep-ph]. *
#***********************************************************************
0 = ickkw
#***********************************************************************
#
#***********************************************************************
# BW cutoff (M+/-bwcutoff*Gamma). Determines which resonances are *
# written in the LHE event file *
#***********************************************************************
15.0 = bwcutoff
#***********************************************************************
# Cuts on the jets. Jet clustering is performed by FastJet. *
# - When matching to a parton shower, these generation cuts should be *
# considerably softer than the analysis cuts. *
# - More specific cuts can be specified in SubProcesses/cuts.f *
#***********************************************************************
 1.0 = jetalgo ! FastJet jet algorithm (1=kT, 0=C/A, -1=anti-kT)
 0.7 = jetradius ! The radius parameter for the jet algorithm
10.0 = ptj ! Min jet transverse momentum
-1.0 = etaj ! Max jet abs(pseudo-rap) (a value .lt.0 means no cut)
#***********************************************************************
# Cuts on the charged leptons (e+, e-, mu+, mu-, tau+ and tau-) *
# More specific cuts can be specified in SubProcesses/cuts.f *
#***********************************************************************
 0.0 = ptl ! Min lepton transverse momentum
-1.0 = etal ! Max lepton abs(pseudo-rap) (a value .lt.0 means no cut)
 0.0 = drll ! Min distance between opposite sign lepton pairs
 0.0 = drll_sf ! Min distance between opp. sign same-flavor lepton pairs
 0.0 = mll ! Min inv. mass of all opposite sign lepton pairs
30.0 = mll_sf ! Min inv. mass of all opp. sign same-flavor lepton pairs
#***********************************************************************
# Photon-isolation cuts, according to hep-ph/9801442. When ptgmin=0, *
# all the other parameters are ignored. *
# More specific cuts can be specified in SubProcesses/cuts.f *
#***********************************************************************
20.0 = ptgmin ! Min photon transverse momentum
-1.0 = etagamma ! Max photon abs(pseudo-rap)
 0.4 = R0gamma ! Radius of isolation code
 1.0 = xn ! n parameter of eq.(3.4) in hep-ph/9801442
 1.0 = epsgamma ! epsilon_gamma parameter of eq.(3.4) in hep-ph/9801442
True = isoEM ! isolate photons from EM energy (photons and leptons)
#***********************************************************************
# For aMCfast+APPLGRID use in PDF fitting (http://amcfast.hepforge.org)*
#***********************************************************************
0 = iappl ! aMCfast switch (0=OFF, 1=prepare grids, 2=fill grids)
#***********************************************************************

I am using macOS mojave for the run. If you think I should use any "development" branch for QED, let me know why one (i have tried a few and they don't let me run QED loops)

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You received this question notification because you are an answer
contact for MadGraph5_aMC@NLO.

Himangshu Neog (himangshuneog) said : #2

Hi Oliver,
I read the paper you refer to. I am still confused why you said e- e- > e- e- is not QED NLO. I want to look at the one loop diagrams of this process above tree level diagrams that I can generate without using [QED] in madgraph. But the process fails with an error about poles don't cancel(using v 3.0.1). I don't know what I am doing wrong.

Hi,

can you explicitly write what do you digit as a command?

Also, can you repeat what are you exactly interested in?

Do you want just to look at diagrams? Do you want to evaluate the loop diagrams for some phase-space points?
Do you want to calculate e+e-->e+e- cross section at NLO EW or NLO QED?

The last option is not available at the moment with the code, since the code is able to calculate NLO EW corrections for hadronic collisions but NOT for e+e- collisions, at the moment.

Cheers
Davide

Himangshu Neog (himangshuneog) said : #4

Hi Davide,
I want to look at the effect of Initial State Radiation in lepton colliders (evaluate the loop diagrams) as done in https://arxiv.org/pdf/1804.00125.pdf They mentioned a plugin for that(not sure if v3.0.1 has this plugin). To look at the gamma coming out of the e- e- collisions, i am trying the following code:
import model loop_qcd_qed_sm-full
generate e- e- > e- e- [QED] which fails when I run launch with the following error:
Lepton-lepton collisions: ignoring PDF related parameters in the run_card.dat (pdlabel, lhaid, reweight_pdf, ...)
INFO: Starting run
INFO: Compiling the code
Lepton-lepton collisions: ignoring PDF related parameters in the run_card.dat (pdlabel, lhaid, reweight_pdf, ...)
/Users/himangshuneog/Downloads/MG5_aMC_v3_0_1/test/bin/internal/ufomodel/particles.py
write ./param_card.dat
INFO: Compiling source...
INFO: ...done, continuing with P* directories
INFO: Compiling directories...
INFO: Compiling on 8 cores
INFO: Compiling P0_emem_emem...
STOP 1
STOP 1
INFO: P0_emem_emem done.
INFO: Checking test output:
INFO: P0_emem_emem
INFO: Result for test_ME:
INFO: Passed.
INFO: Result for check_poles:
Error detected in "launch auto "
write debug file /Users/himangshuneog/Downloads/MG5_aMC_v3_0_1/test/run_01_tag_1_debug.log
If you need help with this issue, please, contact us on https://answers.launchpad.net/mg5amcnlo
aMCatNLOError : Poles do not cancel, run cannot continue

I am attaching the debug file just in case you want to look at it:
launch auto
Traceback (most recent call last):
  File "/Users/himangshuneog/Downloads/MG5_aMC_v3_0_1/madgraph/interface/extended_cmd.py", line 1504, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/Users/himangshuneog/Downloads/MG5_aMC_v3_0_1/madgraph/interface/extended_cmd.py", line 1453, in onecmd_orig
    return func(arg, **opt)
  File "/Users/himangshuneog/Downloads/MG5_aMC_v3_0_1/madgraph/interface/amcatnlo_run_interface.py", line 1739, in do_launch
    self.compile(mode, options)
  File "/Users/himangshuneog/Downloads/MG5_aMC_v3_0_1/madgraph/interface/amcatnlo_run_interface.py", line 5290, in compile
    self.check_tests(test, this_dir)
  File "/Users/himangshuneog/Downloads/MG5_aMC_v3_0_1/madgraph/interface/amcatnlo_run_interface.py", line 5303, in check_tests
    return self.parse_check_poles_log(pjoin(dir, '%s.log' % test))
  File "/Users/himangshuneog/Downloads/MG5_aMC_v3_0_1/madgraph/interface/amcatnlo_run_interface.py", line 5336, in parse_check_poles_log
    raise aMCatNLOError('Poles do not cancel, run cannot continue')
aMCatNLOError: Poles do not cancel, run cannot continue
Value of current Options:
              text_editor : None
      notification_center : True
                    pjfry : None
       cluster_local_path : None
  default_unset_couplings : 99
       group_subprocesses : Auto
ignore_six_quark_processes : False
    loop_optimized_output : True
    cluster_status_update : (600, 30)
         fortran_compiler : None
               hepmc_path : None
                  collier : None
              auto_update : 7
             pythia8_path : None
                hwpp_path : None
low_mem_multicore_nlo_generation : False
                    golem : None
          pythia-pgs_path : None
                  td_path : None
             delphes_path : None
              thepeg_path : None
             cluster_type : condor
        madanalysis5_path : None
      exrootanalysis_path : None
                      OLP : MadLoop
                 applgrid : applgrid-config
               eps_viewer : None
                  fastjet : None
                 run_mode : 2
              web_browser : None
   automatic_html_opening : False
        cluster_temp_path : None
             cluster_size : 100
            cluster_queue : None
             syscalc_path : None
         madanalysis_path : None
                   lhapdf : /Users/himangshuneog/Downloads/MG5_aMC_v3_0_1/HEPTools/lhapdf6/bin/lhapdf-config
             stdout_level : 20
                  nb_core : 8
            f2py_compiler : None
                    ninja : /Users/himangshuneog/Downloads/MG5_aMC_v3_0_1/HEPTools/lib
include_lepton_initiated_processes : False
                  amcfast : amcfast-config
       cluster_retry_wait : 300
      output_dependencies : external
           crash_on_error : False
mg5amc_py8_interface_path : None
         loop_color_flows : False
                  samurai : None
         cluster_nb_retry : 1
                 mg5_path : /Users/himangshuneog/Downloads/MG5_aMC_v3_0_1
                  timeout : 60
                    gauge : Feynman
      complex_mass_scheme : False
             cpp_compiler : None
   max_npoint_for_channel : 0

Is this error happening because madgraph dont support QED NLO? In that case, do you suggest to use the plugin mentioned in the paper?

Hi Himangshu

yes at the moment the code cannot compute NLO EW corrections for e+e- collisions.
I suggest you to use the plugin mentioned in 1804.00125 if you want to look at the effect of Initial State Radiation in lepton colliders as done in https://arxiv.org/pdf/1804.00125.pdf.

Let me just add a comment. As the word says, ISR is a radiation not a loop, but I see you are interested in loop.
NLO EW contains the one-loop correction + one emission of a photon (real), properly evaluated also in the hard limit.

Also, from a quick read of the abstract of the paper you mentioned I see "all orders of soft and soft-collinear photons as well as up to the third order in hard-collinear photons", which is not NLO EW. In other words, even if NLO EW was implemented in our code, it is probably not what you are looking for if you are interested to study ISR.

Cheers
Davide

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