Nucleon generalized form factors with twisted mass fermions

Understand

We present results on the nucleon form factors, momentum fraction and helicity moment for $N_f=2$ and $N_f=2+1+1$ twisted mass fermions for a number of lattice volumes and lattice spacings.

• First results for a new $N_f=2$ ensemble at the physical pion mass are also included.
• The implications of these results on the spin content of the nucleon are discussed taking into account the disconnected contributions at one pion mass.