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2013:groups:tools:eventformats [2013/06/19 00:12]
eric.conte [Present state]
2013:groups:tools:eventformats [2013/06/19 12:03]
eric.conte [Some ideas to discuss]
Line 11: Line 11:
 ^ LHE (gzip compression) ​  | 3.8          |  ^ LHE (gzip compression) ​  | 3.8          | 
 ^ STDHEP (gzip compression) ​  | 153 |  ^ STDHEP (gzip compression) ​  | 153 | 
-^ HEPMC (gzip compression) ​  ​| ​Row 2 Col 2          ​| ​+^ HEPMC (gzip compression) ​  ​| ​346          ​| ​
 ^ simplified LHE (gzip compression) ​  | 5.1          |  ^ simplified LHE (gzip compression) ​  | 5.1          | 
 ^ LHCO (gzip compression) ​  | 1.6          | ^ LHCO (gzip compression) ​  | 1.6          |
Line 17: Line 17:
 ===== Motivations ===== ===== Motivations =====
  
 +  * defining a format for jet-clustering output (without fast-simulation detector).
 + 
 +  * defining a format which extends the LHCO content (too few information for performing sophisticated analysis).
  
 +  * the new format will take into account all Delphes 3 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 ; STDHEP seems to be obsolete.
  
-  ​A small example +  ​* Prefering extending an existing format to defining a totally new one (avoiding developers from coding writer and reader functions from scratch). Our choice is to extend the LHE Format (arXiv:​hep-ph/​0609017) and its structure based on XML tags. Reminder about the LHE structure:
-  ​+
  
 +  <​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.
 +  -24    2    3    3    0    0  0.56722398399E+02 -0.36860071438E+02 -0.33540004381E+03 ​ 0.35186997544E+03 ​ 0.82116958530E+02 0.  0.
 +    6    2    1    2  501    0 -0.14952840473E+03 ​ 0.23999735524E+02 -0.25720865153E+03 ​ 0.34516945021E+03 ​ 0.17335203433E+03 0.  0.
 +   ​24 ​   2    5    5    0    0 -0.16699616992E+03 ​ 0.38357854935E+02 -0.25987491067E+03 ​ 0.32192128147E+03 ​ 0.82093218139E+02 0.  0.
 +  -13    1    6    6    0    0 -0.76026472087E+02 ​ 0.53922169130E+02 -0.95737952146E+02 ​ 0.13361654188E+03 ​ 0.00000000000E+00 0.  1.
 +   ​14 ​   1    6    6    0    0 -0.90969697833E+02 -0.15564314195E+02 -0.16413695853E+03 ​ 0.18830473960E+03 ​ 0.00000000000E+00 0. -1.
 +    5    1    5    5  501    0  0.17467765185E+02 -0.14358119410E+02 ​ 0.26662591415E+01 ​ 0.23248168736E+02 ​ 0.46999998093E+01 0. -1.
 +   ​11 ​   1    4    4    0    0  0.50813684997E+02 -0.61274565657E+02 -0.22556131392E+03 ​ 0.23919554619E+03 ​ 0.00000000000E+00 0. -1.
 +  -12    1    4    4    0    0  0.59087134026E+01 ​ 0.24414494219E+02 -0.10983872989E+03 ​ 0.11267442925E+03 ​ 0.00000000000E+00 0.  1.
 +   ​-5 ​   1    3    3    0  503  0.92806006335E+02 ​ 0.12860335914E+02 -0.78847963972E+02 ​ 0.12254564240E+03 ​ 0.46999998093E+01 0.  1.
 +  </​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. Question: how to manage the hundred possible status-code values in Pythia 8 ? Potentiel solution: adding an ID-code to vertices (see Les Houches session 1).
 +
 +  * Optional substructure in <​event>​ block: defining a XML tag for each collection of objects. Several collections of a same object kind (jets in the example) can be defined and used.
 +
 +  <​hardprocess>​
 +  ...
 +  </​hardprocess>​
 +  <​jets>​
 +  ...
 +  </​jets>​
 +  <jets name="​substructure John Hopkins algo">​
 +  ...
 +  </​jets>​
 +  <​electrons>​
 +  ...
 +  </​electrons>​
 +  <​muons>​
 +  ...
 +  </​muons>​
 +  ...
 +  ​
 +  * List of relevant observables for each object collection must be defined.
 + 
 +  * Name of the format extension: eLHE (e for '​extended'​) ?
2013/groups/tools/eventformats.txt · Last modified: 2013/06/20 12:15 by eric.conte