We present new parameterizations of vector and axial nucleon form factors. We maintain an excellent descriptions of the form factors at low momentum transfers ($Q^2$), where the spatial structure of the nucleon is important, and use the Nachtman scaling variable $ξ$ to relate elastic and inelastic form factors and impose quark-hadron duality constraints at high $Q^2$ where the quark structure dominates. We use the new vector form factors to re-extract updated values of the axial form factor from $\numu$ experiments on deuterium. We obtain an updated world average value from $\numu$d, $\numubar$H and pion electroproduction experiments of $M_{A}$ = $1.014 \pm 0.014 GeV/c^2$. Our parameterizations are useful in modeling $ν$ interactions at low energies (e.g. for $\numu$ oscillations experiments). The predictions for high $Q^2$ can be tested in the next generation electron and $\numu$ scattering experiments.
The Nucleon Axial Form Factor from Elementary Target Data
Lawrence Livermore National Laboratory(劳伦斯利弗莫尔国家实验室);York University(约克大学);University of Rochester(罗切斯特大学);SLAC National Accelerator Laboratory(斯坦福直线加速器中心);Stanford University(斯坦福大学);Aligarh Muslim University(阿里加尔穆斯林大学);William & Mary(威廉与玛丽学院);Fermi National Accelerator Laboratory(费米国家加速器实验室);University of California at Davis(加州大学戴维斯分校);Centro Brasileiro de Pesquisas Físicas(巴西物理研究中心)
The strange and flavor-singlet axial form factors of the nucleon from lattice QCD
Helmholtz-Institut Mainz, Johannes Gutenberg-Universität Mainz(美因茨亥姆霍兹研究所);GSI Helmholtzzentrum für Schwerionenforschung(GSI重离子研究中心);Theoretical Physics Department, CERN(欧洲核子研究中心理论物理部);Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn(波恩大学辐射与核物理亥姆霍兹研究所)
Axial and Vector Structure Functions for Electron- and Neutrino- Nucleon Scattering Cross Sections at all $Q^2$ using Effective Leading order Parton Distribution Functions
Nucleon axial-vector form factor and radius from radiatively-corrected antineutrino scattering data
Institute of Theoretical Physics, Chinese Academy of Sciences(中国科学院理论物理研究所);Theoretical Division, Los Alamos National Laboratory(洛斯阿拉莫斯国家实验室理论部);Nuclear & Chemical Sciences Division, Lawrence Livermore National Laboratory(劳伦斯利弗莫尔国家实验室核与化学科学部);Department of Physics, Imperial College London(伦敦帝国理工学院物理系);Department of Physics and Astronomy, University of Rochester(罗切斯特大学物理与天文学系);Department of Physics and Astronomy, York University(约克大学物理与天文学系);Department of Physics and Astronomy, University of Kentucky(肯塔基大学物理与天文学系);Fermilab(费米实验室)