EventProducer

This package is used to centrally produced events for FCC-hh, HE-LHC at a center of mass of 100 and 27TeV respectively. Any other future collider can also be supported by this framework. In order to use it, please get in contact with [email protected] as running this package requieres specific rights.

Table of contents

• EventProducer
• Table of contents
• Clone and initialisation
• Generate LHE events from gridpacks
• Generate LHE files directly from MG5
• Generate FCCSW files from the LHE and decay with Pyhtia8
• Generate FCCSW files from Pythia8
• Expert mode
  • Updating the database
  • Cleaning bad jobs
  • Update the webpage
  • Create the sample list for analyses

Clone and initialisation

If you do not attempt to contribute to the repository, simply clone it:

git clone [email protected]:FCC-hh-framework/EventProducer.git

If you aim at contributing to the repository, you need to fork and then clone the forked repository:

git clone [email protected]:YOURGITUSERNAME/EventProducer.git

Then initialise:

source ./init.sh

Generate LHE files from gripacks

To send jobs starting from a gridpack that does not exist but that you have produced, do the following:

• place gridpack on eos
  • for FCC /eos/experiment/fcc/hh/generation/gridpacks/
  • for HELHC /eos/experiment/fcc/helhc/generation/gridpacks/
• if the gridpack is from Madgraph, name it mg_process, if from powheg please name it pw_process,
• add to config/param_FCC.py or config/param_HELHC.py an entry corresponding to the gridpack name in the gridpacklist list, depending on the study.

If the gridpack already exists or has been properly added to the param, then simply run:

python bin/run.py --FCC/HELHC --LHE --send --lsf --typelhe gp -p <process> -n <nevents> -N <njobs> -q <queue>

example to send 10 jobs of 10 000 events of di-electron events with Mll> 2TeV using 1nh queue of lsf for HELHC:

python bin/run.py --HELHC --LHE --send --lsf --typelhe gp -p mg_pp_ee_lo -n 10000 -N 10 -q 1nh

Generate LHE files directly from MG5

To send jobs directly from MG5, you need a configuration file (see in examples directory *.mg5) and, optionally:

• a cuts.f file (containing additional cuts)
• a model (see in models directory for instance)

As before, you need to add the process to the config/param_FCC.py file. Thn you can run with the following command:

python bin/run.py --FCC --LHE --send --lsf --typelhe mg -p mg_pp_hh_test --mg5card mg5/examples/pp_hh.mg5 --model mg5/models/loop_sm_hh.tar -N 2 -n 10000 -q 8nh --lsf  --memory 16000. --disk 8000.

Generate FCCSW files from the LHE and decay with Pyhtia8

1. if you want to let pythia decay without specifiying anything, you can use the default card, but if you have requested extra partons at matrix element, you might need to specify matching parameters to your pythia card
2. if you want to use a specific decay, make sure that the decay you want is in decaylist and branching_ratios of the param
3. then create appropriate pythia8 card, by appending standard card with decay syntax if needed and add it to the proper directory, example:

/eos/experiment/fcc/hh/utils/pythiacards/p8_pp_ttz_5f_znunu.cmd

1. Run jobs:

python bin/run.py --FCC/HELHC --reco --send --type lhep8 --lsf -p <process> -N <njobs> -q <queue> --version <version>

Example produce 10 jobs of FCC Delphes events of ttz decaying the Z to neutrinos. :

python bin/run.py --FCC --reco --send --type lhep8 --lsf -p mg_pp_ttz_5f -N 10 -q 8nh --version fcc_v02

Please note that the decay in pythia is optional, and that there is no need to specify the number of events to run on as it will by default run over all the events present in the LHE file

Generate FCCSW files from Pythia8

The Pythia8 manual is available here: http://home.thep.lu.se/~torbjorn/pythia81html/Welcome.html

1. Define process in pythialist in the param corresponding to your job flavour
2. Write Pythia8 process card and put it in: /eos/experiment/fcc/hh/utils/pythiacards/ or /eos/experiment/fcc/helhc/utils/pythiacards/

exemple p8_pp_Zprime_10TeV_ttbar.cmd

1. send jobs

python bin/run.py --FCC/HELHC --reco --send --type p8 --lsf -p <process> -n <nevents> -N <njobs> -q <queue> --version <version>

Example produce 1 job of 10000 events of Z' to ttbar

python bin/run.py --HELHC --reco --send --type p8 --lsf -p p8_pp_Zprime_10TeV_ttbar -n 10000 -N 1 --lsf -q 1nh --version helhc_v01

Expert mode

The following commands should be run with care, as they update the database, webapge etc... They run every two hours with crontab, thus you will eventually know when your sample is ready to be used. The --force option is used to force the script to run as to optimze running time, processes that have not been flagged will not be checked.

Updating the database

1. First one need to check the eos directories that have been populated with new files. Example for LHE:

python bin/run.py --HELHC --LHE --checkeos [--process process] [--force]

Example for Delphes events:

python bin/run.py --HELHC --reco --checkeos --version helhc_v01 [--process process] [--force]

2. Second one need to check the quality of the files that have been produced. Example for LHE:

python bin/run.py --HELHC --LHE --check [--process process] [--force]

Example for Delphes events:

python bin/run.py --HELHC --reco --check --version helhc_v01 [--process process] [--force]

3. Then the checked files needs to be merged: Example for LHE:

python bin/run.py --HELHC --LHE --merge [--process process] [--force]

Example for Delphes events:

python bin/run.py --HELHC --reco --merge --version helhc_v01 [--process process] [--force]

Cleaning bad jobs

To clean jobs that are flagged as bad, the following command can be used for LHE:

python bin/run.py --HELHC --LHE --clean [--process process]

and for Delphes

python bin/run.py --HELHC --reco --clean --version helhc_v01 [--process process]

As the code checks the files that are in the end written on eos, we need to clean also old jobs that don't produced outputs 3 days after they started. To do so run the following command for LHE

python bin/run.py --HELHC --LHE --cleanold [--process process]

and for Delphes

python bin/run.py --HELHC --reco --cleanold --version helhc_v01 [--process process]

If you want to completly remove a process, the following command can be used with care for LHE:

python bin/run.py --HELHC --LHE --remove --process process 

and for Delphes

python bin/run.py --HELHC --reco --remove --process process --version helhc_v01

Update the webpage

The webpage can be updated after the files have been checked and merged by running for LHE

python bin/run.py --HELHC --LHE --web

and for Delphes

python bin/run.py --HELHC --reco --web --version helhc_v01

Create the sample list for analyses

To create the list of samples to be used in physics analyses

python bin/run.py --FCC --reco --sample --version fcc_v02