This item is non-discoverable
Loading...
Non-discoverable
Nucleon electromagnetic form factors using lattice simulations at the physical point
Alexandrou, C Constantinou, M Hadjiyiannakou, K Jansen, K Kallidonis, C Koutsou, G Vaquero Aviles-Casco, A
Alexandrou, C
Constantinou, M
Hadjiyiannakou, K
Jansen, K
Kallidonis, C
Koutsou, G
Vaquero Aviles-Casco, A
Citations
Altmetric:
Genre
Journal Article
Date
2017-08-01
Advisor
Committee member
Group
Department
Permanent link to this record
Collections
Research Projects
Organizational Units
Journal Issue
DOI
10.1103/PhysRevD.96.034503
Abstract
© 2017 American Physical Society. We present results for the nucleon electromagnetic form factors using an ensemble of maximally twisted mass clover-improved fermions with pion mass of about 130 MeV. We use multiple sink-source separations and three analysis methods to probe ground-state dominance. We evaluate both the connected and disconnected contributions to the nucleon matrix elements. We find that the disconnected quark loop contributions to the isoscalar matrix elements are small, giving an upper bound of up to 2% of the connected and smaller than its statistical error. We present results for the isovector and isoscalar electric and magnetic Sachs form factors and the corresponding proton and neutron form factors. By fitting the momentum dependence of the form factors to a dipole form or to the z expansion, we extract the nucleon electric and magnetic radii, as well as the magnetic moment. We compare our results to experiment as well as to other recent lattice QCD calculations.
Description
Citation
Citation to related work
American Physical Society (APS)
Has part
Physical Review D
ADA compliance
For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu