TY  - JOUR
AU  - Alexandrou, C.
AU  - Bacchio, S.
AU  - Constantinou, M.
AU  - Finkenrath, J.
AU  - Hadjiyiannakou, K.
AU  - Jansen, Karl
AU  - Koutsou, G.
TI  - Nucleon strange electromagnetic form factors
JO  - Physical review / D
VL  - 101
IS  - 3
SN  - 2470-0010
CY  - Melville, NY
PB  - Inst.302363
M1  - PUBDB-2020-02140
M1  - arXiv:1909.10744
SP  - 031501
PY  - 2020
N1  - 7 pages and 5 figures ; publication: Phys.Rev. D101 3 (2020) 031501 ; ;
AB  - The role of the strange quarks on the low-energy interactions of the proton can be probed through the strange electromagnetic form factors. Knowledge of these form factors provides essential input for parity-violating processes and contributes to the understanding of the sea quark dynamics. We determine the strange electromagnetic form factors of the nucleon within the lattice formulation of Quantum Chromodynamics using simulations that include light, strange and charm quarks in the sea all tuned to their physical mass values. We employ state-of-the-art techniques to accurately extract the form factors for values of the momentum transfer square up to 0.8 GeV<sup>2</sup>. We find that both the electric and magnetic form factors are statistically non-zero. We obtain for the strange magnetic moment μ<sup>s</sup>=−0.017(4), the strange magnetic radius 〈r<sup>2</sup><sub>M</sub> 〉<sup>s</sup>=−0.015(9) fm<sup>2</sup>, and the strange charge radius 〈r<sup>2</sup><sub>E</sub> 〉<sup>s</sup>=−0.0048(6) fm<sup>2</sup>.
KW  - form factor: electromagnetic (autogen)
KW  - form factor: magnetic (autogen)
KW  - nucleon: form factor: electromagnetic (autogen)
KW  - quark: sea (autogen)
KW  - p: interaction (autogen)
KW  - quantum chromodynamics (autogen)
KW  - momentum transfer (autogen)
KW  - magnetic moment (autogen)
KW  - charge radius (autogen)
KW  - lattice (autogen)
KW  - charm (autogen)
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000513217400003
DO  - DOI:10.1103/PhysRevD.101.031501
UR  - https://bib-pubdb1.desy.de/record/438681
ER  -