English

Neutral Weak Form Factors of Proton and Neutron

High Energy Physics - Phenomenology 2017-11-21 v3 High Energy Physics - Lattice Nuclear Theory

Abstract

We determine the nucleon neutral weak electromagnetic form factors GE,MZ,p(n)G^{Z,p(n)}_{E,M} by combining results from light-front holographic QCD and lattice QCD calculations. We deduce nucleon electromagnetic form factors from light-front holographic QCD which provides a good parametrization of the experimental data of the nucleon electromagnetic form factors in the entire momentum transfer range and isolate the strange quark electromagnetic form factors GE,MsG^{s}_{E,M} using lattice QCD. From these calculations, we obtain precise estimates of the neutral weak form factors in the momentum transfer range of 0GeV2Q20.5GeV20\,\text{GeV}^2\leq Q^2 \leq 0.5 \,\text{GeV}^2 . From the lattice QCD calculation, we present Q2Q^2-dependence of the strange quark form factors. We also deduce the neutral weak Dirac and Pauli form factors F1,2Z,p(n)F_{1,2}^{Z,p(n)} of the proton and the neutron.

Keywords

Cite

@article{arxiv.1611.07031,
  title  = {Neutral Weak Form Factors of Proton and Neutron},
  author = {Raza Sabbir Sufian},
  journal= {arXiv preprint arXiv:1611.07031},
  year   = {2017}
}

Comments

Published Version, 9 figures, 12 pages