TWISTER

TWISTER  1.20       870218 17.00 CERN POOL TWISTER = W5048
A MONTE CARLO FOR QCD HIGH-PT SCATTERING
BASED ON QCD AND THE LUND FRAGMENTATION MODEL

PATCH,W5048.     TWISTER          18 FEB 87                W 999
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                      T W I S T E R
               version 1.2, March 27, 1987                           
                                                                      
            A MONTE CARLO FOR QCD HIGH-PT SCATTERING                 
              including higher twist processes                       
                                                                      
    Author: Gunnar Ingelman, DESY theory group,                      
                  Notkestrasse 85, D-2000 Hamburg 52, FRG            
                  EARN/BITNET: T00ING @ DHHDESY3                     
                                                                      
    DOCUMENTATION:  LONG WRITEUP W5035, SEE ALSO
                    G. Ingelman, DESY 86-131                         
                                                                      
     The routines are ordered as in the above manual.                 
     Please report any problems to the author.                        
                                                                      
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     Updates in version 1.2 (wrt version 1.0 described in the manual):

  1. Double precision has been introduced in some places in PYRAND
     in relation to the cross-section calculations.
     As a result, common PYCROZ is split into PYPROZ and PYPROX,
     the latter containing the double precision arrays PRECRS, PRECRM.

  2. EHLQ structure function parametrisations updated according to
     Eichten et al., Fermilab-Pub-86/75T (1986).
     Dimension of XQ-array in common PYINT1 increased to XQ(-6:6).

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