Weird results from virtual reweighter

Hi,

I am using the virt_reweighter python script to reweigh some Z boson production events. I largely get the expected results but every run there are a few outliers.

The process p p > Z > mu+ mu- [QCD], for instance, mostly gives the correct numbers but every once in a while there is a weight that is about 10^2 or 10^3 times too large (also of negative sign sometimes). This results in an incorrect ratio of the reweighted quantity over the Born weight (should analytically be ~2.49). The events where this happens don't seem special to my, admittedly untrained, eyes.
I am using a dynamical scale of mu = Q and massless quarks (ickkw = -1). To do this I have brute forced this choice in the setscales.f script in a somewhat inelegant way but judging from the event files this part of the code seems to work for every event.

On a side note, the process p p > Z [QCD] also contains a few zero value weights after the reweighting script is run which I don't understand but am less concerned about at the moment.

I include the slightly altered function in setscales.f, the run card I use, and a few examples of events where the reweighting worked and a few where it failed.

Thank you for your help!
Andrin

Within setscales.f:

      function scale_global_reference(pp)
c This is a function of the kinematic configuration pp, which returns
c a scale to be used as a reference for renormalization scale
      implicit none
      include 'genps.inc'
      include 'nexternal.inc'
      include 'run.inc'
      include 'cuts.inc'
      double precision ppv(0:3)
      double precision scale_global_reference,pp(0:3,nexternal)
      double precision tmp,pt,et,dot,xm2,sumdot,xmt2,ptmp(0:3)
      external pt,et,dot,sumdot
      integer i,j
      character*80 temp_scale_id
      common/ctemp_scale_id/temp_scale_id
c
      tmp=0
      if(ickkw.eq.-1) dynamical_scale_choice=10
      if(.false.)then
c Special for analytic resummation in veto'ed cross sections:
         tmp=ptj
         temp_scale_id='NLO+NNLL veto scale: ptj_max'
      elseif(dynamical_scale_choice.eq.1) then
c Total transverse energy of the event.
          tmp=0d0
          do i=3,nexternal
             tmp=tmp+et(pp(0,i))
          enddo
          temp_scale_id='sum_i eT(i), i=final state'
      elseif(dynamical_scale_choice.eq.2) then
c sum of the transverse mass divide
c m^2+pt^2=p(0)^2-p(3)^2=(p(0)+p(3))*(p(0)-p(3))
          tmp=0d0
          do i=3,nexternal
            tmp=tmp+dsqrt(max(0d0,(pp(0,i)+pp(3,i))*(pp(0,i)-pp(3,i))))
          enddo
          temp_scale_id='sum_i mT(i), i=final state'
      elseif(dynamical_scale_choice.eq.3.or.dynamical_scale_choice.eq.-1) then
c sum of the transverse mass divide by 2
c m^2+pt^2=p(0)^2-p(3)^2=(p(0)+p(3))*(p(0)-p(3))
          tmp=0d0
          do i=3,nexternal
            tmp=tmp+dsqrt(max(0d0,(pp(0,i)+pp(3,i))*(pp(0,i)-pp(3,i))))
          enddo
          tmp=tmp/2d0
          temp_scale_id='H_T/2 := sum_i mT(i)/2, i=final state'
      elseif(dynamical_scale_choice.eq.0) then
c fixed scale
          tmp=muR_ref_fixed
          temp_scale_id='fixed scale'
      elseif(dynamical_scale_choice.eq.10) then
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
cc USER-DEFINED SCALE: ENTER YOUR CODE HERE cc
cc to use this code you must set cc
cc dynamical_scale_choice = 10 cc
cc in the run_card (run_card.dat) cc
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
        temp_scale_id='User-defined dynamical scale: mu = Q' ! use a meaningful string
        tmp = 0d0
        do i = 0,3
          ppv(i) = 0.0
          do j = 3, nexternal-1
            ppv(i) = ppv(i) + pp(i,j)
          enddo
        enddo

        tmp = dsqrt(dot(ppv,ppv))
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
cc USER-DEFINED SCALE: END OF USER CODE cc
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
      else
        write(*,*)'Unknown option in scale_global_reference',dynamical_scale_choice
        stop
      endif

      scale_global_reference=tmp

Run card:

<LesHouchesEvents version="3.0">
  <header>
  <MG5ProcCard>
#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.7.0 2020-01-20 *
#* *
#* 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 default_unset_couplings 99
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_sm-no_b_mass
define p = 21 2 4 1 3 -2 -4 -1 -3 5 -5 # pass to 5 flavors
define j = p
generate p p > Z > mu+ mu- [QCD]
output ppzmupmum2
  </MG5ProcCard>
  <slha>
######################################################################
## 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
    1 9.118800e+01 # MU_R

###################################
## INFORMATION FOR MASS
###################################
Block mass
    6 1.730000e+02 # MT
   15 1.777000e+00 # MTA
   23 9.118800e+01 # MZ
   25 1.250000e+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 0.000000e+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
  5 0.000000e+00 # b : 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 1.180000e-01 # aS

###################################
## INFORMATION FOR YUKAWA
###################################
Block yukawa
    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
## 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 0.000000e+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
#===========================================================
# QUANTUM NUMBERS OF NEW STATE(S) (NON SM PDG CODE)
#===========================================================

Block QNUMBERS 82 # gh
        1 0 # 3 times electric charge
        2 1 # number of spin states (2S+1)
        3 8 # colour rep (1: singlet, 3: triplet, 8: octet)
        4 1 # Particle/Antiparticle distinction (0=own anti)
  </slha>
  <MGRunCard>
#***********************************************************************
# 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. *
# *
# To display additional parameter, you can use the command: *
# update to_full *
#***********************************************************************
#
#*******************
# 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
 -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 ! valid settings: average, sum, bias
#***********************************************************************
# 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 *
#***********************************************************************
         33 = iseed
#***********************************************************************
# Collider type and energy *
#***********************************************************************
 1 = lpp1 ! beam 1 type (0 = no PDF)
 1 = lpp2 ! beam 2 type (0 = no PDF)
 6500.0 = ebeam1 ! beam 1 energy in GeV
 6500.0 = ebeam2 ! beam 2 energy in GeV
#***********************************************************************
# PDF choice: this automatically fixes also alpha_s(MZ) and its evol. *
#***********************************************************************
 lhapdf = pdlabel ! PDF set
 25200 = 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
 10 = 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]. *
#***********************************************************************
 -1 = ickkw
#***********************************************************************
#
#***********************************************************************
# BW cutoff (M+/-bwcutoff*Gamma). Determines which resonances are *
# written in the LHE event file *
#***********************************************************************
 1000000.0 = 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)
#***********************************************************************
# Cuts associated to MASSIVE particles identified by their PDG codes. *
# All cuts are applied to both particles and anti-particles, so use *
# POSITIVE PDG CODES only. Example of the syntax is {6 : 100} or *
# {6:100, 25:200} for multiple particles *
#***********************************************************************
  {} = pt_min_pdg ! Min pT for a massive particle
  {} = pt_max_pdg ! Max pT for a massive particle
  {} = mxx_min_pdg ! inv. mass for any pair of (anti)particles
#***********************************************************************
# For aMCfast+APPLGRID use in PDF fitting (http://amcfast.hepforge.org)*
#***********************************************************************
 0 = iappl ! aMCfast switch (0=OFF, 1=prepare grids, 2=fill grids)
#***********************************************************************
  </MGRunCard>
  <scalesfunctionalform>
    muR User-defined dynamical scale
    muF1 User-defined dynamical scale
    muF2 User-defined dynamical scale
    QES User-defined dynamical scale
  </scalesfunctionalform>
  <MonteCarloMasses>
       1 0.320000E+00
       2 0.320000E+00
       3 0.500000E+00
       4 0.155000E+01
       5 0.495000E+01
      11 0.510999E-03
      13 0.105658E+00
      15 0.177682E+01
      21 0.750000E+00
  </MonteCarloMasses>
  <initrwgt>
    <weightgroup name='scale_variation -1' combine='envelope'>
      <weight id='1001'> dyn= -1 muR=0.10000E+01 muF=0.10000E+01 </weight>
      <weight id='1002'> dyn= -1 muR=0.20000E+01 muF=0.10000E+01 </weight>
      <weight id='1003'> dyn= -1 muR=0.50000E+00 muF=0.10000E+01 </weight>
      <weight id='1004'> dyn= -1 muR=0.10000E+01 muF=0.20000E+01 </weight>
      <weight id='1005'> dyn= -1 muR=0.20000E+01 muF=0.20000E+01 </weight>
      <weight id='1006'> dyn= -1 muR=0.50000E+00 muF=0.20000E+01 </weight>
      <weight id='1007'> dyn= -1 muR=0.10000E+01 muF=0.50000E+00 </weight>
      <weight id='1008'> dyn= -1 muR=0.20000E+01 muF=0.50000E+00 </weight>
      <weight id='1009'> dyn= -1 muR=0.50000E+00 muF=0.50000E+00 </weight>
    </weightgroup>
  </initrwgt>
  </header>
  <init>
   2212 2212 0.65000000E+04 0.65000000E+04 -1 -1 25200 25200 -4 1
 0.16394779E+04 0.58588773E+01 0.16394779E+04 0
  </init>

Two working events:

<event>
 5 0 +4.0869030e+03 8.92889780e+01 7.54677110e-03 1.18377930e-01
        1 -1 0 0 501 0 +0.0000000000e+00 +0.0000000000e+00 +2.2288570000e+02 2.2288570000e+02 0.0000000000e+00 0.0000e+00 9.0000e+00
       -1 -1 0 0 0 501 +0.0000000000e+00 +0.0000000000e+00 -8.9423879000e+00 8.9423879000e+00 0.0000000000e+00 0.0000e+00 9.0000e+00
       23 2 1 2 0 0 +0.0000000000e+00 +0.0000000000e+00 +2.1394331000e+02 2.3182809000e+02 8.9288978000e+01 0.0000e+00 0.0000e+00
      -13 1 3 3 0 0 -3.2064456000e+01 -1.5905795000e+01 +1.7625204000e+02 1.7984967000e+02 0.0000000000e+00 0.0000e+00 9.0000e+00
       13 1 3 3 0 0 +3.2064456000e+01 +1.5905795000e+01 +3.7691277000e+01 5.1978418000e+01 0.0000000000e+00 0.0000e+00 9.0000e+00
#aMCatNLO 1 0 0 0 0 0.00000000E+00 0.00000000E+00 9 5 0 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
<rwgt>
<wgt id='1001'> 0.16394E+04 </wgt>
<wgt id='1002'> 0.16394E+04 </wgt>
<wgt id='1003'> 0.16394E+04 </wgt>
<wgt id='1004'> 0.18213E+04 </wgt>
<wgt id='1005'> 0.18213E+04 </wgt>
<wgt id='1006'> 0.18213E+04 </wgt>
<wgt id='1007'> 0.14413E+04 </wgt>
<wgt id='1008'> 0.14413E+04 </wgt>
<wgt id='1009'> 0.14413E+04 </wgt>
</rwgt>
</event>
<event>
 5 0 +4.0869040e+03 9.03552890e+01 7.54677110e-03 1.18164620e-01
        1 -1 0 0 501 0 +0.0000000000e+00 +0.0000000000e+00 +1.2012059000e+02 1.2012059000e+02 0.0000000000e+00 0.0000e+00 9.0000e+00
       -1 -1 0 0 0 501 +0.0000000000e+00 +0.0000000000e+00 -1.6991421000e+01 1.6991421000e+01 0.0000000000e+00 0.0000e+00 9.0000e+00
       23 2 1 2 0 0 +0.0000000000e+00 +0.0000000000e+00 +1.0312917000e+02 1.3711201000e+02 9.0355289000e+01 0.0000e+00 0.0000e+00
      -13 1 3 3 0 0 +7.2441661000e+00 -3.8988041000e+01 +8.4409249000e+01 9.3260209000e+01 0.0000000000e+00 0.0000e+00 9.0000e+00
       13 1 3 3 0 0 -7.2441661000e+00 +3.8988041000e+01 +1.8719923000e+01 4.3851805000e+01 0.0000000000e+00 0.0000e+00 9.0000e+00
#aMCatNLO 1 0 0 0 0 0.00000000E+00 0.00000000E+00 9 5 0 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
<rwgt>
<wgt id='1001'> 0.16394E+04 </wgt>
<wgt id='1002'> 0.16394E+04 </wgt>
<wgt id='1003'> 0.16394E+04 </wgt>
<wgt id='1004'> 0.18258E+04 </wgt>
<wgt id='1005'> 0.18258E+04 </wgt>
<wgt id='1006'> 0.18258E+04 </wgt>
<wgt id='1007'> 0.14364E+04 </wgt>
<wgt id='1008'> 0.14364E+04 </wgt>
<wgt id='1009'> 0.14364E+04 </wgt>
</rwgt>
</event>

Two failed events with weights +5.0756756e+06 and -6.1385739e+06:

<event>
 5 0 +5.0756756e+06 8.69829150e+01 7.54677110e-03 1.18849150e-01
       -3 -1 0 0 0 501 +0.0000000000e+00 +0.0000000000e+00 +3.3183067000e+03 3.3183067000e+03 0.0000000000e+00 0.0000e+00 9.0000e+00
        3 -1 0 0 501 0 +0.0000000000e+00 +0.0000000000e+00 -5.7002171000e-01 5.7002171000e-01 0.0000000000e+00 0.0000e+00 9.0000e+00
       23 2 1 2 0 0 +0.0000000000e+00 +0.0000000000e+00 +3.3177367000e+03 3.3188768000e+03 8.6982915000e+01 0.0000e+00 0.0000e+00
      -13 1 3 3 0 0 -6.1189663000e+00 +4.2667179000e+01 +1.4377739000e+03 1.4384199000e+03 0.0000000000e+00 0.0000e+00 9.0000e+00
       13 1 3 3 0 0 +6.1189663000e+00 -4.2667179000e+01 +1.8799628000e+03 1.8804569000e+03 0.0000000000e+00 0.0000e+00 9.0000e+00
#aMCatNLO 1 0 0 0 0 0.00000000E+00 0.00000000E+00 9 5 0 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
<rwgt>
<wgt id='1001'> 0.16395E+04 </wgt>
<wgt id='1002'> 0.16395E+04 </wgt>
<wgt id='1003'> 0.16395E+04 </wgt>
<wgt id='1004'> 0.17570E+04 </wgt>
<wgt id='1005'> 0.17570E+04 </wgt>
<wgt id='1006'> 0.17570E+04 </wgt>
<wgt id='1007'> 0.14848E+04 </wgt>
<wgt id='1008'> 0.14848E+04 </wgt>
<wgt id='1009'> 0.14848E+04 </wgt>
</rwgt>
</event>
<event>
 5 0 -6.1385739e+06 9.53447640e+01 7.54677110e-03 1.17207690e-01
        2 -1 0 0 501 0 +0.0000000000e+00 +0.0000000000e+00 +3.2519728000e+03 3.2519728000e+03 0.0000000000e+00 0.0000e+00 9.0000e+00
       -2 -1 0 0 0 501 +0.0000000000e+00 +0.0000000000e+00 -6.9885455000e-01 6.9885455000e-01 0.0000000000e+00 0.0000e+00 9.0000e+00
       23 2 1 2 0 0 +0.0000000000e+00 +0.0000000000e+00 +3.2512740000e+03 3.2526717000e+03 9.5344764000e+01 0.0000e+00 0.0000e+00
      -13 1 3 3 0 0 +1.5191224000e+01 +1.3061496000e+01 +1.4988705000e+02 1.5122005000e+02 0.0000000000e+00 0.0000e+00 9.0000e+00
       13 1 3 3 0 0 -1.5191224000e+01 -1.3061496000e+01 +3.1013869000e+03 3.1014516000e+03 0.0000000000e+00 0.0000e+00 9.0000e+00
#aMCatNLO 1 0 0 0 0 0.00000000E+00 0.00000000E+00 9 5 0 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
<rwgt>
<wgt id='1001'> 0.16395E+04 </wgt>
<wgt id='1002'> 0.16395E+04 </wgt>
<wgt id='1003'> 0.16395E+04 </wgt>
<wgt id='1004'> 0.17024E+04 </wgt>
<wgt id='1005'> 0.17024E+04 </wgt>
<wgt id='1006'> 0.17024E+04 </wgt>
<wgt id='1007'> 0.15562E+04 </wgt>
<wgt id='1008'> 0.15562E+04 </wgt>
<wgt id='1009'> 0.15562E+04 </wgt>
</rwgt>
</event>