Nucleon axial form factor from generalized parton distributions
نویسندگان
چکیده
منابع مشابه
Nucleon Form Factors from Generalized Parton Distributions
M. Guidal,1 M. V. Polyakov,2, 3 A. V. Radyushkin,4, 5, 6 and M. Vanderhaeghen5, 7 Institut de Physique Nucléaire Orsay, F-91406 Orsay, France Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg 188300, Russia Université de Liège au Sart Tilman, B-4000 Liège 1 Belgium Physics Department, Old Dominion University, Norfolk, VA 23529, USA Thomas Jefferson National Accelerator Facility, Ne...
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Results from a recent analysis of the zero-skewness generalized parton distributions (GPDs) for valence quarks are reviewed. The analysis bases on a physically motivated parameterization of the GPDs with a few free parameters adjusted to the nucleon form factor data. The Fourier transforms of the GPDs representing quark densities in the impact parameter plane, as well as moments of the GPDs are...
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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. For each quark mass, we find that the axial form factor falls off slower than the corresponding proton electric form fac...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2019
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.100.016001