DIS: IC FONLL-A q Matching factorization scale log

[felixhekhorn]

• We believe the definitions of the factorization scale log in the FONLL matching coefficient functions contain a typo:
  

  apfel/src/DIS/MassiveZeroCoefficientFunctions.f

  Lines 1129 to 1131 in fdfd068

  	double precision DICa
  	*
  	lnk = dlog(xi/kfacQ) ! ln(muF2/mh2)

  
  

  apfel/src/DIS/MassiveZeroCoefficientFunctions.f

  Lines 1157 to 1159 in fdfd068

  	double precision DICb
  	*
  	lnk = dlog(xi/kfacQ) ! ln(muF2/mh2)

  
  

  apfel/src/DIS/MassiveZeroCoefficientFunctions.f

  Lines 1185 to 1187 in fdfd068

  	double precision DICc
  	*
  	lnk = dlog(xi/kfacQ) ! ln(muF2/mh2)

• the correct thing to do is a product of xi and kfacQ as is done for the gluon case
  

  apfel/src/DIS/IncludeIntrinsicCharm.f

  Lines 59 to 61 in fdfd068

  	xi = xigrid(ixi*xistep)
  	lambda = 1d0 / xi
  	lnF = dlog(xi*kfacQ)

• see also the report of that variable:
  

  apfel/src/DIS/ReportParametersDIS.f

  Line 81 in fdfd068

  write(6,"(a,f7.4)") " muF / Q = ",dsqrt(kfacQ)