Attachment '14.03.2012.txt'

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   1 Minutes of the HERAFitter User's Meeting, DESY 14.03.2012 
   2 ==================================================================  
   3 
   4 Presentation from Sasha
   5 ------------------------
   6 
   7 = first external result based on HERAFitter framework (ATLAS): strange quark distribution  
   8 
   9 = Time scale for beta2 release:
  10  28.03 - all codes committed to the trunk
  11  03.04 - release build HERAFitter-00-02-01
  12  10.04 - validation, bug fixes
  13  18.04 - HERAFitter-00-02-02 built for external use, tested/reported at User meeting
  14  20.04 - beta2 release uploaded to the web page together with release notes
  15    
  16 = Next User's meeting 18.04.2012 at CERN, 4PM CET
  17 
  18 
  19 Updates from Developers
  20 ------------------------
  21 
  22 
  23   - Heavy flavour schemes:
  24    
  25     RT: needs a better way to access different variants of the code, a la G. Watt's version 
  26        -> Voica has volunteered 
  27     FONLL: very likely not in time for beta release
  28     ACOT: NNLO paper out, however inclusion of it not for beta release as there
  29           are still issues with kfactors -- to be clarified soon. 
  30           Work on implementing ACOT into QCDNUM.
  31     ABKM: although it was validated with stand alone code, it needs further tuning to work 
  32           properly for the whole kinematic space
  33     FFNS: ready
  34  
  35 
  36     reweigthing NNPDF tool: presentation from Kristin 
  37                 	    - this Tool can work via chisquare tables or data+theory.
  38  			    - successful implementation using chisquare tables, however it needs a wrapper 
  39 			    to link the stand alone code to the herafitter.	
  40 			    - define the validation sample: advised to use grids formed from HERAFitter 
  41 			    - hopefully in time for beta2 release
  42 
  43     diffPDF: validated against stand alone,
  44 	     almost ready to be committed, however there is an overlap of functions with ABKM, the idea
  45              is to collect them together with cernlib function in a common directory. 
  46 	     
  47   - Top: no update
  48 
  49   - Jets, DY:
  50 
  51 
  52     FASTNLO: - added steerable scale for the tables
  53              - match the cuts between data and tables 
  54              - some problems with the dijet tables, not to be included in the release
  55 
  56     APPLGRID: -interface to DYNNLO done (1 loop, almost complete for 2 loops), release next week.
  57 
  58 
  59   - unintegrated PDFs using kt evolution: Hannes Jung presentation:
  60                   - successful implementation of the CCFM codes (mostly extracted from CASCADE)
  61                   - reasonable results using a simple gluon parametristaion (4 free param),
  62 		    chisquare improves when using additional consistency constraint.
  63                   - investigate the size of the uncertainties at low x (likely related to the rigid parametrisation form)
  64 
  65   - Dipole Models: not for the beta2 release
  66 
  67  
  68   - QCDNUM:
  69     synchronization of the QCDNUM and HERAFItter codes is in progress
  70     new version will be available for next week which includes:
  71 	    - fast PDF integration on grid
  72             - mixed schemes for alphas evolution
  73             - cuts for the grids 
  74             - increased number of points   
  75 
  76   - Error message handling: no update 
  77 
  78   - LHAPDF interface: no update
  79 
  80   - Installation: optimal to remove the CERNLIB and ROOT dependencies 
  81     
  82   - Documentation: provide a wiki for documentation + README per modules 
  83 
  84 =======

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