Changes between Version 10 and Version 11 of FormFactors

Timestamp:

Dec 12, 2013, 12:38:35 PM (11 years ago)

Author:

Olivier Mattelaer

Comment:

--

FormFactors

@@ -101 +101 @@
 VVS2 = Lorentz(name = 'VVS2',
                spins = [ 3, 3, 1 ],
-               structure = 'FormFactor(P(-1,1)*P(-1,3) ) * P(-1,1)*P(-1,2)*Metric(1,2)')        
+               structure = 'FormFactor(P(-1,1)*P(-1,3), P(-1,1)*P(-1,2) ) * P(-1,1)*P(-1,2)*Metric(1,2)')       
 }}}
    1. All functions defined liked that need to return a complex number
    2. All argument of such function need to be a complex number, or an expression returning a complex number. It is therefore not possible to provide to the function the set of momenta as argument (since this is a vector).   
+   3. You can include as many argument as you want for the function.
 
 Examples of functions.f
 {{{
-double precision FormFactor(S1):
-
-      double precision S1
+double complex FormFactor(S1, S2):
+
+      double complex S1, S2
       include input.inc ! include all model parameter
       
-      FormFactor = DLOG( S1**2/MW__EXP__2) 
+      FormFactor = LOG( (S1**2 + S2**2)/MW**2) 
       return 
       end