madgraph does not support squared coupling orders ("DIM6^2==1" and "NP^2==2") together with madspin
Dear Expert,
I am generation my ttbar event using Dim6top model (MadGraph version: MG5_aMC_v2_9_1_2) :
proc_card :
-------
import model dim6top_LO_UFO-ctg
define p = p b b~
generate p p > t t~ FCNC=0 QED=0 QCD=2 DIM6=1 DIM6^2==1
output dim6top_1
-------
I am using MadSpin for particle decay and I got the following error :
INFO: generating the full matrix element squared (with decay)
INFO: generate p p > t t~ QED=0 QCD=2 NP=2 NP^2==2, (t~ > b~ w- , w- > l- vl~ NP=0 ), (t > b w+ , w+ > l+ vl NP=0 ) --no_warning=
Command "generate_events " interrupted with error:
MadGraph5Error : Decay processes cannot specify squared orders constraints.
Please report this bug on https:/
More information is found in '/AtlasDisk/
Please attach this file to your report.
I will send the content of run_01_
1. MadSpin Card :
-------
decay t > w+ b, w+ > l+ vl DIM6=0
decay t~ > w- b~, w- > l- vl~ DIM6=0
decay w+ > l+ vl
decay w- > l- vl~
-------
1. Comment :
I also get the same error with SMEFT model.
-------
import model SMEFTatNLO-LO_ctg
define p = p b b~
generate p p > t t~ QED=0 QCD=2 NP=2 NP^2==2
output smeft_ctg
-------
Thanks in advance.
A.Tnourji
Question information
- Language:
- English Edit question
- Status:
- Solved
- Assignee:
- No assignee Edit question
- Solved by:
- Olivier Mattelaer
- Solved:
- 2021-02-16
- Last query:
- 2021-02-16
- Last reply:
- 2021-02-16
Abdellah Tnourji (atnourji) said : | #1 |
#******
#* MadGraph5_
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#* VERSION 2.9.1.2 20xx-xx-xx *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https:/
#* *
#******
#* *
#* Command File for MadEvent *
#* *
#* run as ./bin/madevent.py filename *
#* *
#******
generate_events
Traceback (most recent call last):
File "/AtlasDisk/
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File "/AtlasDisk/
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self.
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File "/AtlasDisk/
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File "/AtlasDisk/
return func(arg, **opt)
File "/AtlasDisk/
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File "/AtlasDisk/
self.
File "/AtlasDisk/
stop = Cmd.onecmd_
File "/AtlasDisk/
return func(arg, **opt)
File "/AtlasDisk/
out = f(self, *args, **opt)
File "/AtlasDisk/
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File "/AtlasDisk/
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File "/AtlasDisk/
out = f(self, *args, **opt)
File "/AtlasDisk/
out = f(*args, **opt)
File "/AtlasDisk/
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line = current_
File "/AtlasDisk/
stop = self.onecmd_
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return func(arg, **opt)
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"squared orders constraints.")
MadGraph5Error: Decay processes cannot specify squared orders constraints.
automatic_
cluster_
#******
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.9.1.2 2021-02-02 *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https:/
#* *
#******
#* *
#* Command File for MadGraph5_aMC@NLO *
#* *
#* run as ./bin/mg5_aMC filename *
#* *
#******
set group_subprocesses Auto
set ignore_
set max_t_for_channel 99
set loop_optimized_
set low_mem_
set default_
set zerowidth_tchannel True
set loop_color_flows False
set gauge unitary
set complex_mass_scheme False
set max_npoint_
import model dim6top_
define p = g u c d s u~ c~ d~ s~
define j = g u c d s u~ c~ d~ s~
define l+ = e+ mu+
define l- = e- mu-
define vl = ve vm vt
define vl~ = ve~ vm~ vt~
define p = 21 2 4 1 3 -2 -4 -1 -3 5 -5 # pass to 5 flavors
define j = p
define p = p b b~
generate p p > t t~ FCNC=0 QED=0 QCD=2 DIM6=1 DIM6^2==1
output dim6top_1_ctg_new
#######
## 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 DIM6
#######
Block dim6
1 1.000000e+03 # Lambda
#######
## INFORMATION FOR MASS
#######
Block mass
6 1.720000e+02 # MT
23 9.118760e+01 # MZ
24 7.982440e+01 # MW
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
15 0.000000e+00 # ta- : 0.0
16 0.000000e+00 # vt : 0.0
21 0.000000e+00 # g : 0.0
22 0.000000e+00 # a : 0.0
#######
## INFORMATION FOR SMINPUTS
#######
Block sminputs
2 1.166370e-05 # Gf
3 1.184000e-01 # aS (Note that Parameter not used if you use a PDF set)
#######
## INFORMATION FOR YUKAWA
#######
Block yukawa
6 1.720000e+02 # ymt
#######
## INFORMATION FOR DECAY
#######
DECAY 6 1.470800e+00 # WT
DECAY 23 2.416039e+00 # WZ
DECAY 24 2.002950e+00 # WW
DECAY 25 5.753088e-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
#******
# MadGraph5_aMC@NLO *
# *
# run_card.dat MadEvent *
# *
# This file is used to set the parameters of the run. *
# *
# Some notation/
# *
# Lines starting with a '# ' are info or comments *
# *
# mind the format: value = variable ! comment *
# *
# To display more options, you can type the command: *
# update full_run_card *
#******
#
#******
# 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 *
#******
100000 = nevents ! Number of unweighted events requested
0 = iseed ! rnd seed (0=assigned automatically=
#******
# Collider type and energy *
# lpp: 0=No PDF, 1=proton, -1=antiproton, 2=photon from proton, *
# 3=photon from electron, 4=photon from muon *
#******
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 also alpha_s and its evol. *
#******
lhapdf = pdlabel ! PDF set
260000 = 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
3 = dynamical_
1.0 = scalefact ! scale factor for event-by-event scales
#******
# Type and output format
#******
False = gridpack !True = setting up the grid pack
-1.0 = time_of_flight ! threshold (in mm) below which the invariant livetime is not written (-1 means not written)
average = event_norm ! average/sum. Normalization of the weight in the LHEF
# To see MLM/CKKW merging options: type "update MLM" or "update CKKW"
#******
#
#******
# Phase-Space Optimization strategy (basic options)
#******
0 = nhel ! using helicities importance sampling or not.
2 = sde_strategy ! default integration strategy (hep-ph/2021.xxxxx)
! 2 is new strategy (using only the denominator)
# To see advanced option for Phase-Space optimization: type "update psoptim"
#******
# Generation bias, check the wiki page below for more information: *
# 'cp3.irmp.
#******
None = bias_module ! Bias type of bias, [None, ptj_bias, -custom_folder-]
{} = bias_parameters ! Specifies the parameters of the module.
#
#******
# Parton level cuts definition *
#******
#
#
#******
# BW cutoff (M+/-bwcutoff*
#******
15.0 = bwcutoff ! (M+/-bwcutoff*
#******
# Standard Cuts *
#******
# Minimum and maximum pt's (for max, -1 means no cut) *
#******
{} = 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) *
#******
{} = 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 *
#******
#******
# Minimum and maximum invariant mass for pairs *
#******
{} = mxx_min_pdg ! min invariant mass of a pair of particles X/X~ (e.g. {6:250})
{'default': False} = mxx_only_
#******
# Inclusive cuts *
#******
0.0 = ptheavy ! minimum pt for at least one heavy final state
#******
# maximal pdg code for quark to be considered as a light jet *
# (otherwise b cuts are applied) *
#******
5 = maxjetflavor ! Maximum jet pdg code
#******
#
#******
# Store info for systematics studies *
# WARNING: Do not use for interference type of computation *
#******
False = use_syst ! Enable systematics studies
#
none = systematics_program ! none, systematics [python], SysCalc [depreceted, C++]
['--mur=0.5,1,2', '--muf=0.5,1,2', '--pdf=errorset'] = systematics_
# Syscalc is deprecated but to see the associate options type'update syscalc'
# Additional hidden parameters
#******
['--mur=0.5,1,2', '--muf=0.5,1,2', '--pdf=errorset'] = systematics_
Hi,
This is indeed something that we can not generate so far.
I'm still hoping to find someone to work on that but no luck so far...
Cheers,
Olivier
Abdellah Tnourji (atnourji) said : | #3 |
Thanks Olivier Mattelaer, that solved my question.