CT14 PDF files for LHAPDF v.5

IMPORTANT: compile the LHAPDF library with the patched CTEQ wrapper below
 to correctly include all 56 CT14 PDF error sets in your calculation

Available files
====
CT14nlo.LHgrid  -- CT14 NLO, for LHAPDF v. 5
CT14nlo_as.tar.gz  -- alpha_s series for CT14 NLO
CT14nnlo.LHgrid -- CT14 NNLO, for LHAPDF v. 5
CT14nnlo_as.tar.gz  -- alpha_s series for CT14 NNLO
CT14additional5.tar.gz -- CT14 LO fits and fits with up to 3, 4, and 6 
  active flavors

wrapct12.f      -- a corrected wrapper for LHAPDF v.5;
                   the maximal allowed number of Hessian sets 
                   was increased to accommodate 57 sets 
                   of CT14

CT14 sets at leading order (LO) and in the fixed-flavor number scheme
Two families of LO sets are provided: 
   CT14lo -- obtained with LO DGLAP evolution 
             and two-loop evolution of alpha_s(Q); alpha_s(M_Z) = 0.118;
   CT14llo -- obtained with LO DGLAP evolution 
             and one-loop evolution of alpha_s(Q); alpha_s(M_Z) = 0.130.

By default, CT14 PDFs are obtained in a general-mass scheme SACOT-chi 
with up to 5 active quark flavors. At each QCD order, we also provide special
sets with up to 3, 4, and 6 quark flavors in the PDFs.  The 6-flavor PDFs 
include the top quark as the active flavor at Q > m_top. The 3- 
and 4-flavor PDF sets are obtained by the following procedure.

1. Take a variable-flavor-number (VFN) set with max Nf=5, such as CT10 NNLO 

2. For the boundary conditions, take the PDF parametrization from 
   this set at the initial energy scale Q_0 = 1.295 GeV, 
   and the QCD coupling alpha_s(Q, nf) at the tau-lepton mass m_tau. 
   Evolve alpha_s(M_Z,5)=0.118 down to Q=m_tau including the bottom mass 
   threshold and convert it to alpha_s(m_tau,3) or alpha_s(m_tau,4).

3. Evolve alpha_s(m_tau, nf) and the PDFs to higher scales
   Q > Q_0 using nf-flavor evolution equations with nf=3 or 4. The 
   value of alpha_s(M_Z) from this evolution will generally be different 
   from 0.118.

The following LO and fixed-flavor PDF sets are available.

PDF     Maximal no.   Loops in       alpha_s(Q)              grid
set    of flavors    beta-function   is set to..             file      
CT14 NNLO    3              3         0.1056    at Q=m_Z     CT14nnlo_NF3
                                       0.312    at Q=m_tau  
                                             
CT14 NNLO    4              3         0.113     at Q=m_Z     CT14nnlo_NF4
                                      0.319     at Q=m_tau   

CT14 NNLO    6              3         0.118000  at Q=m_Z     CT14nnlo_NF6

CT14 NLO     3              2         0.106     at Q=m_Z     CT14nlo_NF3
                                      0.309     at Q=m_tau   
                                             
CT14 NLO     4              2         0.1128    at Q=m_Z     CT14nlo_NF4
                                      0.315     at Q=m_tau   

CT14 NLO     6              2         0.118000  at Q=m_Z     CT14nlo_NF6

CT14 LO      3              2         0.106     at Q=m_Z     CT14lo_NF3
                                      0.309     at Q=m_tau   
                                             
CT14 LO      4              2         0.1128    at Q=m_Z     CT14lo_NF4
                                      0.315     at Q=m_tau   

CT14 LO      5              2         0.118000  at Q=m_Z     CT14lo

CT14 LO      6              2         0.118000  at Q=m_Z     CT14lo_NF6

CT14 LO      3              1         0.118     at Q=m_Z     CT14llo_NF3
                                      0.355     at Q=m_tau   
                                             
CT14 LO      4              1         0.125     at Q=m_Z     CT14llo_NF4
                                      0.359     at Q=m_tau   

CT14 LO      5              1         0.130000  at Q=m_Z     CT14llo

CT14 LO      6              1         0.130000  at Q=m_Z     CT14llo_NF6