pp > ZZ jj with NLO

Asked by Haifeng Li on 2014-09-18

I want to generate VBF process,

p p > z z* j j

where the zz*->4l. I want to have NLO precision.

The command I am using is,

generate p p > j j l+ l- l+ l- QCD=0 QED=6 [QCD]

It runs hours and use about 90% memory of my desktop (total memory 8 GB). I stopped the code in order not to crash my machine. Any idea? Log file is below.

* *
* VERSION 2.1.2 2014-07-03 *
* *
* The MadGraph5_aMC@NLO Development Team - Find us at *
* https://server06.fynu.ucl.ac.be/projects/madgraph *
* and *
* http://amcatnlo.web.cern.ch/amcatnlo/ *
* *
* Type 'help' for in-line help. *
* Type 'tutorial' to learn how MG5 works *
* Type 'tutorial aMCatNLO' to learn how aMC@NLO works *
* Type 'tutorial MadLoop' to learn how MadLoop works *
* *
************************************************************
load MG5 configuration from input/mg5_configuration.txt
lhapdf-config does not seem to correspond to a valid lhapdf-config executable.
Please set the 'lhapdf' variable to the (absolute) /PATH/TO/lhapdf-config (including lhapdf-config).
Note that you can still compile and run aMC@NLO with the built-in PDFs
 MG5_aMC> set lhapdf /PATH/TO/lhapdf-config

fastjet-config does not seem to correspond to a valid fastjet-config executable (v3+). We will use fjcore instead.
 Please set the 'fastjet'variable to the full (absolute) /PATH/TO/fastjet-config (including fastjet-config).
 MG5_aMC> set fastjet /PATH/TO/fastjet-config

Using default eps viewer "evince". Set another one in ./input/mg5_configuration.txt
Using default web browser "firefox". Set another one in ./input/mg5_configuration.txt
import /home/haifeng/analysis/hzz/aMCatNLOForVBF/MG5_aMC_v2_1_2/vbfzz-decay-nlo.py
The import format was not given, so we guess it as command
import model sm
INFO: Restrict model sm with file models/sm/restrict_default.dat .
INFO: Run "set stdout_level DEBUG" before import for more information.
INFO: Change particles name to pass to MG5 convention
Defined multiparticle p = g u c d s u~ c~ d~ s~
Defined multiparticle j = g u c d s u~ c~ d~ s~
Defined multiparticle l+ = e+ mu+
Defined multiparticle l- = e- mu-
Defined multiparticle vl = ve vm vt
Defined multiparticle vl~ = ve~ vm~ vt~
Defined multiparticle all = g u c d s u~ c~ d~ s~ a ve vm vt e- mu- ve~ vm~ vt~ e+ mu+ t b t~ b~ z w+ h w- ta- ta+
define p = u d s u~ d~ s~
Defined multiparticle p = u d s u~ d~ s~
define j = u d s c u~ d~ s~ c~
Defined multiparticle j = u d s c u~ d~ s~ c~
define l+ = mu+
Defined multiparticle l+ = mu+
define l- = mu-
Defined multiparticle l- = mu-
define vl = ve vm vt
Defined multiparticle vl = ve vm vt
define vl~ = ve~ vm~ vt~
Defined multiparticle vl~ = ve~ vm~ vt~
generate p p > j j l+ l- l+ l- QCD=0 QED=6 [QCD]
The default sm model does not allow to generate loop processes. MG5_aMC now loads 'loop_sm' instead.
 import model loop_sm
INFO: Restrict model loop_sm with file models/loop_sm/restrict_default.dat .
INFO: Run "set stdout_level DEBUG" before import for more information.
INFO: Change particles name to pass to MG5 convention
Kept definitions of multiparticles l- / j / vl / l+ / p / vl~ unchanged
Defined multiparticle all = g gh gh~ d u s c d~ u~ s~ c~ a ve vm vt e- mu- ve~ vm~ vt~ e+ mu+ b t b~ t~ z w+ h w- ta- ta+
WARNING: Process: u/d/s/u~/d~/s~ u/d/s/u~/d~/s~ > u/d/s/c/u~/d~/s~/c~ u/d/s/c/u~/d~/s~/c~ mu+ mu- mu+ mu- QCD=0 QED=6 [ all = QCD ] can have real emission processes which are not finite.
To avoid this, please use multiparticles when generating the process and be sure to include all the following particles in the multiparticle definition:
 g, c, s, u, d, d~, u~, s~, c~
INFO: Generating FKS-subtracted matrix elements for born process: u u > u u mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (1 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u d > u d mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (2 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u s > u s mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (3 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u s > d c mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (4 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u u~ > u u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (5 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u u~ > d d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (6 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u u~ > s s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (7 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u u~ > c c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (8 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u d~ > u d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (9 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u d~ > c s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (10 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u s~ > u s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (11 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d u > u d mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (12 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d d > d d mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (13 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d s > d s mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (14 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d u~ > d u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (15 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d u~ > s c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (16 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d d~ > u u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (17 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d d~ > d d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (18 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d d~ > s s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (19 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d d~ > c c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (20 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d s~ > u c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (21 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d s~ > d s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (22 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s u > u s mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (23 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s u > d c mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (24 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s d > d s mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (25 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s s > s s mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (26 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s u~ > s u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (27 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s d~ > s d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (28 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s d~ > c u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (29 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s s~ > u u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (30 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s s~ > d d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (31 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s s~ > s s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (32 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s s~ > c c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (33 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ u > u u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (34 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ u > d d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (35 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ u > s s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (36 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ u > c c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (37 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ d > d u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (38 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ d > s c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (39 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ s > s u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (40 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ u~ > u~ u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (41 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ d~ > u~ d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (42 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ s~ > u~ s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (43 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: u~ s~ > d~ c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (44 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ u > u d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (45 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ u > c s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (46 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ d > u u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (47 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ d > d d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (48 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ d > s s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (49 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ d > c c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (50 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ s > s d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (51 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ s > c u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (52 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ u~ > u~ d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (53 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ d~ > d~ d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (54 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: d~ s~ > d~ s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (55 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ u > u s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (56 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ d > u c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (57 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ d > d s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (58 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ s > u u~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (59 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ s > d d~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (60 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ s > s s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (61 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ s > c c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (62 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ u~ > u~ s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (63 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ u~ > d~ c~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (64 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ d~ > d~ s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (65 / 66)
INFO: Generating FKS-subtracted matrix elements for born process: s~ s~ > s~ s~ mu+ mu- mu+ mu- QED=6 QCD=0 [ QCD ] (66 / 66)
INFO: Generating virtual matrix elements using MadLoop:
INFO: Generating virtual matrix element with MadLoop for process: u u > mu+ mu- mu+ mu- u u QED=6 QCD=0 [ QCD ] (1 / 66)

Question information

Language:
English Edit question
Status:
Open
For:
MadGraph5_aMC@NLO Edit question
Assignee:
marco zaro Edit question
Last query:
2014-10-17
Last reply:
2014-09-18
marco zaro (marco-zaro) said : #1

Dear Haifeng,
this process is currently beyond the capabilities of our code.
Not only for memory usage, but also because of phase space problems...
We will come back to you when we think that electroweak production of 4lep +jj is feasible.
Thanks for your question,

Marco

Haifeng Li (haifengde) said : #2

Dear Macro,

I saw you have new verison of aMC@NLO (2.2.1). Can aMC@NLO do 4lep +jj at NLO now?

Best, Haifeng

Can you help with this problem?

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