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2013:groups:tools:eventformats [2013/06/18 23:38] eric.conte [Motivations] |
2013:groups:tools:eventformats [2013/06/19 07:52] eric.conte [Some ideas to discuss] |
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===== Present state ===== | ===== Present state ===== | ||
- | {{ :2013:groups:tools:mc_formats.png?200 |}} | + | {{ :2013:groups:tools:mc_formats.png?400 |}} |
+ | Sample size: example of ttbar dileptonic @ LHC (10,000 events) | ||
+ | |||
+ | | ^ File size (Mo) ^ | ||
+ | ^ LHE (gzip compression) | 3.8 | | ||
+ | ^ STDHEP (gzip compression) | 153 | | ||
+ | ^ HEPMC (gzip compression) | 346 | | ||
+ | ^ simplified LHE (gzip compression) | 5.1 | | ||
+ | ^ LHCO (gzip compression) | 1.6 | | ||
+ | ^ Delphes ROOT | 161 | | ||
===== Motivations ===== | ===== Motivations ===== | ||
+ | * defining a format sample for jet-clustering output (without fast-simulation detector). | ||
+ | |||
+ | * LHCO contains too few information for performing sophisticated analysis. Need to add more variables. | ||
+ | * LHCO does not take into account all Delphes3 potential. | ||
===== Some ideas to discuss ===== | ===== Some ideas to discuss ===== | ||
- | * Name of the format extension: eLHE (e for 'extended') ? | + | * Using text format (theorist-friendly format :-D). ROOT is rejected. |
+ | |||
+ | * Keeping the structure of the existing LHE Format and its XML tags. Name of the format extension: eLHE (e for 'extended') ? Reminder: | ||
+ | |||
+ | <LesHouchesEvents version="X"> | ||
+ | <header> | ||
+ | ... | ||
+ | </header> | ||
+ | <init> | ||
+ | 2212 2212 0.40000000000E+04 0.40000000000E+04 0 0 10042 10042 3 1 | ||
+ | 0.47468358499E+01 0.15068796356E-01 0.47469000000E-03 0 | ||
+ | ... | ||
+ | </init> | ||
+ | <event> | ||
+ | 12 0 0.4746900E-03 0.2312331E+03 0.7957747E-01 0.1132798E+00 | ||
+ | 21 -1 0 0 501 502 0.00000000000E+00 0.00000000000E+00 0.74064204368E+02 0.74064204368E+02 0.00000000000E+00 0. 1. | ||
+ | 21 -1 0 0 502 503 0.00000000000E+00 0.00000000000E+00 -0.74552086368E+03 0.74552086368E+03 0.00000000000E+00 0. 1. | ||
+ | -6 2 1 2 0 503 0.14952840473E+03 -0.23999735524E+02 -0.41424800778E+03 0.47441561784E+03 0.17473990778E+03 0. 0. | ||
+ | ... | ||
+ | </event> | ||
+ | <event> | ||
+ | ... | ||
+ | </LesHouchesEvents> | ||
+ | |||
+ | * Possibility to store hard-process states and reco objects in a same file. | ||
+ | |||
+ | * The generation step (hard-process, shower, reco) will be specified by the status code. | ||
+ | |||
+ | * Optional substructure in <event> block: defining a XML for each collection of objects. Several collections of a same objects (jets in the example) can be defined and used. | ||
- | A small example | + | <hardprocess> |
+ | </hardprocess> | ||
+ | <jets> | ||
+ | </jets> | ||
+ | <jets name="substructure John Hopkins algo"> | ||
+ | </jets> | ||
+ | <electrons> | ||
+ | </electrons> | ||
+ | <muons> | ||
+ | </muons> | ||
+ | ... | ||
| | ||