Nucleon Axial Form Factor from Lattice QCD
K. F. Liu, S. J. Dong, T. Draper, J. M. Wu, W. Wilcox
Abstract
Results for the isovector axial form factors of the proton from a lattice QCD calculation are presented for both point-split and local currents. They are obtained on a quenched 163 × 24 lattice at β= 6.0 with Wilson fermions for a range of quark masses from strange to charm. We determine the finite lattice renormalization for both the local and point-split currents of heavy quarks. Results extrapolated to the chiral limit show that the q2 dependence of the axial form factor agrees reasonably well with experiment. The axial coupling constant gA calculated for the local and the point-split currents is about 6\% and 12\% smaller than the experimental value respectively.
Create a lesson
Related papers
Confining strings in the reconfined phase of trace deformed three dimensional SU(2) Yang-Mills theory
Claudio Bonati, Michele Caselle, Alessio Negro et al.
Generalizable Equivariant Diffusion Models for Non-Abelian Lattice Gauge Theory: Analytical Foundations and Numerical Scaling Tests
Gert Aarts, Diaa E. Habibi, Andreas Ipp et al.
2+1 flavor light hadron spectrum with PACS10 configurations
K. -I. Ishikawa, N. Ishizuka, Y. Kuramashi et al.
Precision determination of Bc and Bc* meson decay constants from lattice QCD
Navdeep Singh Dhindsa, Debsubhra Chakraborty, Nilmani Mathur
Meson spectroscopy from lattice QCD
Andrew W. Jackura
Generative sampling with physics-informed kernels
Friederike Ihssen, Renzo Kapust, Jan M. Pawlowski