These runcards were used to compute top pair production processes for NNPDF4.1 with MATRIX at NNLO except for the following changes:

• The top mass was varied up (mt_+ = 175.0 GeV) and down (mt_- = 170.0 GeV) with respect to the central value mt_0 = 172.5 GeV.
• The renormalisation and factorisation scales were dynamical but evaluated at the central value mt_0. That is, the scales were set to HT(mt=mt_0, pT)/4, with HT = (ET_t + ET_tx) and ET_t = sqrt(mt_0 ** 2 + pT_t ** 2), ET_tx = sqrt(mt_0 ** 2 + pT_tx ** 2). This choice is reflected in the paramter.dat card,

: dynamic_scale     =  11

where dynamic_scale = 11 corresponds to the definition written in specify.scales.cxx

To reproduce the NNPDF4.1 predictions, these runcards should be modified by setting in model.dat

 6 172.5 # M_t