The 39th International Symposium on Lattice Field Theory (Lattice 2022)

Nucleon electromagnetic form factors using Nf=2+1+1 twisted mass fermion ensembles at the physical mass point

9 Aug 2022, 14:20

20m

CP1-HSZ/1.002 (CP1-HSZ) - HS6 (CP1-HSZ)

Oral Presentation Hadron Structure Hadron Structure

Speaker

Giannis Koutsou (The Cyprus Institute)

Description

We present results for the nucleon electromagnetic form factors using $N_f$=2+1+1 twisted mass lattice QCD with clover improvement and with quarks with masses tuned to their physical values. Our preliminary analysis includes three ensembles at similar physical volume and lattice spacings $a\sim$0.08 fm, $\sim$0.07 fm, and $\sim$0.06 fm allowing us to take the continuum limit directly at the physical mass point. For each ensemble we assess excited state effects using several sink-source time separations in the range 0.8 fm - 1.6 fm, exponentially increasing statistics with the separation.

Presentation materials

koutsou-lattice2022.pdf