Changes between Version 22 and Version 23 of Reweight


Ignore:
Timestamp:
Feb 1, 2016, 4:07:51 PM (9 years ago)
Author:
Olivier Mattelaer
Comment:

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  • Reweight

    v22 v23  
    5252 '''This method will be released in a future version of MadGraph5_aMC@NLO''' and can currently be provided on request. Since this reweighting is based on a dedicated basis the NLO sample must be generated in a specific way to have the additional information in the leshouches event.
    5353
    54 
     54[[PageOutline]]
    5555= Technical details
    5656== Limitation
     
    120120}}}
    121121
    122  For a NLO accurate reweighting, type
     122 For a NLO accurate reweighting (available since 2.4.0), type
    123123 {{{
    124124set keep_rwgt_info True
     
    134134 When you are done, exit the file and press enter.
    135135
    136  == Running the code after the generation of events as been completed.
     136 === Running the code after the generation of events as been completed.
    137137
    138138 In order to run the reweighting on previously generated samples. You need to go to the associated process directory and run either '''./bin/madevent''' or '''./bin/aMC@NLO'''script for  respectively LO/NLO event generation.
     
    146146 The first sample is available in case of LO event generation, while the second is present in the case of NLO event generation.
    147147
    148  == Content of the reweight_card
    149  
    150  === Description of the cards:
     148 === Content of the reweight_card
     149 
    151150 
    152151 The cards is compose of two sections:
    153  1. '''Options'': those are options which change the behaviour of the reweighting. Those line starts by "change" a list of all available options are available in next section.
     152 1. '''Options'': those are options which change the behavior of the reweighting. Those lines need to be specified before the first 'launch' line to have effects.
     153   1. "change model <XXX>" performed the reweighting within a new model (you then need to profide a full param_card and not a difference)
     154   2. "change process <XXX>" change the process definition of the process.
     155   3. "change process <XXX> --add" add one process definition of the process to the new list.
     156   4. "change output <i>": Three options: 'default'(i.e. lhef version3 format), '2.0' (i.e. lhef version2 format, the main weight is replace), 'unweight' (a new unweighting is applied on the events sample.)
     157   5. "change helicity <True|False>": perform reweighting for the given helicity (True --default--) or do the sum over helicity.
     158   6. "change rwgt_dir <PATH>": change directory where the computation is performed. This can be use to avoid to recreate/recompile the fortran executable if pointing to a previously existing directory.
     159   7. change mode LO: For NLO sample, this flag force to use the kamikaze reweighting (available in 2.4.0)
     160
    154161 2. '''benchmark definition''': starting one benchmark starts with the line
    155162    {{{
     
    174181  Note all the following options will be available in Madgraph5_aMC@NLO since version 2.3.2.
    175182  They have to be included in the reweighting_card before the first launch command.
    176    1. "change model <XXX>" performed the reweighting within a new model (you then need to profide a full param_card and not a difference)
    177    2. "change process <XXX>" change the process definition of the process.
    178    3. "change process <XXX> --add" add one process definition of the process to the new list.
    179    4. "change output <i>": Three options: 'default'(i.e. lhef version3 format), '2.0' (i.e. lhef version2 format, the main weight is replace), 'unweight' (a new unweighting is applied on the events sample.)
    180    5. "change helicity <True|False>": perform reweighting for the given helicity (True --default--) or do the sum over helicity.
    181    6. "change rwgt_dir <PATH>": change directory where the computation is performed. This can be use to avoid to recreate/recompile the fortran executable if pointing to a previously existing directory.
    182    7. change mode LO: For NLO sample, this flag force to use the kamikaze reweighting
    183 
    184  = Input/Output format
     183
     184
     185 == Input/Output format
    185186
    186187 1. the output format follows the Leshouches agreement version 3 [link arxiv]