arXiv
Open Access
2023
Precision calculation of the electromagnetic radii of the proton and neutron from lattice QCD
Dalibor Djukanovic
Georg von Hippel
Harvey B. Meyer
Konstantin Ottnad
Miguel Salg
+1 lainnya
Abstrak
We present lattice-QCD results for the electromagnetic form factors of the proton and neutron including both quark-connected and -disconnected contributions. The parametrization of the $Q^2$-dependence of the form factors is combined with the extrapolation to the physical point. In this way, we determine the electric and magnetic radii and the magnetic moments of the proton and neutron. For the proton, we obtain at the physical pion mass and in the continuum and infinite-volume limit $\sqrt{\langle r_E^2 \rangle^p} = 0.820(14)$ fm, $\sqrt{\langle r_M^2 \rangle^p} = 0.8111(89)$ fm, and $μ_M^p = 2.739(66)$, where the errors include all systematics.
Topik & Kata Kunci
Penulis (6)
D
Dalibor Djukanovic
G
Georg von Hippel
H
Harvey B. Meyer
K
Konstantin Ottnad
M
Miguel Salg
H
Hartmut Wittig
Akses Cepat
Informasi Jurnal
- Tahun Terbit
- 2023
- Bahasa
- en
- Sumber Database
- arXiv
- Akses
- Open Access ✓