| | 36 | === Running MadWeight (input files-parametrisation)? === |
| | 37 | |
| | 38 | 1. You can run MadWeight either from the created directory (via the command "./bin/madweight.py") or via the main mg5_amc shell (with the command "launch PATH") |
| | 39 | 2. The code ask you then the following question: |
| | 40 | {{{ |
| | 41 | Do you want to edit a card (press enter to bypass editing)? |
| | 42 | 1 / param : param_card.dat |
| | 43 | 2 / run : run_card.dat |
| | 44 | 3 / madweight : madweight_card.dat |
| | 45 | 4 / transfer : transfer_card.dat |
| | 46 | 5 / lhco : input.lhco |
| | 47 | you can also |
| | 48 | - enter the path to a valid card or banner. |
| | 49 | - use the 'set' command to modify a parameter directly. |
| | 50 | The set option works only for param_card, run_card and madweight_card. |
| | 51 | Type 'help set' for more information on this command. |
| | 52 | - use the 'change_tf' command to set a transfer functions. |
| | 53 | [0, done, 1, param, 2, run, 3, madweight, 4, enter path, ... ][60s to answer] |
| | 54 | }}} |
| | 55 | * If this is the first time you run in that directory, You *have to* type "change_tf" to define your transfer_function |
| | 56 | * You can type a number to edit the related cards. |
| | 57 | * run_card.dat -> impose some cut in your phase space integration (Normaly you have to remove all cut for MadWeight except if you have divergencies) |
| | 58 | * param_card.dat (initial value for the theoretical parameter: some parameter can be different in running time following what is asked in MadWeight_card.dat->see run option) |
| | 59 | * transfer_card.dat -> See TransferFunction |
| | 60 | * MadWeight_card.dat -> See below |
| | 61 | * You can enter the path to your events sample either here or inside MadWeight_card. |
| | 62 | |
| | 63 | === Output format === |
| | 64 | You have two output file: Events/${RUN_NAME}/weights.out and Events/${RUN_NAME}/output.xml. Note that the weights are '''NOT''' normalized to the cross-section. You have to compute tha |
| | 65 | |
| | 66 | |
| | 67 | 1. weights.out: |
| | 68 | {{{ |
| | 69 | 1 1 1 2.86248722993e-26 3.20462163546e-28 |
| | 70 | }}} |
| | 71 | * The first three column are respectively: the LHCO_event_number, the theoretical hyppothesis number, the transfer function parameter set number. |
| | 72 | * The two latest numbers are the value of the weight and the associate error. |
| | 73 | 2. output.xml |
| | 74 | This files contains all the details associate to the computation written in a xml way. By default this output format didn't contain additional information compare to the weights.out, but if you change the log_level in the MadWeight card, then it can contain the value of each jet-parton permutation as well as the (technical) value associate to each channel of integration and potentially the full log associate to each jobs. |
| | 75 | |
| | 76 | === More options === |
| | 77 | |
| | 78 | * More options are available via the executable: ./bin/mw_options. This open an invite of commands where you can call each step of the code, redifine your transfer functions, launch a refine and so on. You can type help to have more details on the various options. |
| | 79 | * All the options described for MW2 below are still accessible in the same way (IF they still makes sense like the dir options.). |
| | 80 | |
| | 81 | |
| | 82 | == Tutorial == |
| | 83 | |
| | 84 | * [https://cp3.irmp.ucl.ac.be/projects/madgraph/wiki/WMassMeasurmentExample WMassMeasurmentExample]: determination of the W mass. |
