Features

yadism implements the DIS observables up to NNLO, i.e. it is possible to ask for the following perturbative orders:

  • LO

  • NLO

  • NNLO

The implemented observables consist of:

  • the DIS unpolarized structure functions: \(F_2\), \(F_L\), and \(x F_3\) (the structure function \(2 x F_1\) is also provided)

  • the DIS polarized structure functions: \(g_4\), \(g_L\), and \(2 x g_1\) (the structure function \(2 x g_5\) is also provided)

  • the DIS reduced cross sections (with various normalizations)

for all the possible EW bosons, i.e. for the processes: EM, NC, CC.

All the observables are delivered both as their total value, but also split up according to their heavyness (e.g. \(F_{2,c}\) is provided).

Moreover the following features are all available:

  1. flavor number schemes: FFNS, ZM-VFNS, FFN0

  2. scale variations: independent variations of factorization scale \(\mu_F\) and renormalization scale \(\mu_R\)

  3. target mass corrections (available with the exact numerical integration and as approximate non-integrated expressions)

  4. intrinsic flavors, i.e. heavy quark-initiated DIS