Speaker
Yong-Chull Jang
(Brookhaven National Laboratory)
Description
Results for the nucleon isovector form factors for the vector and axial-vector currents will be presented. The calculations are done using clover valence quarks on 11 ensembles, including two physical pion mass ensembles, generated with 2+1+1 flavors of HISQ fermions by the MILC collaboration. High statistics are achieved using the truncated solver method with bias correction, and the coherent sequential source method.
Extrapolation to the physical limit includes leading order discretization, chiral and finite volume effects. In addition, we will present z-expansion analysis with unitarity and sum rule constraints.
Authors
Yong-Chull Jang
(Brookhaven National Laboratory)
Rajan Gupta
(Los Alamos National Lab)
Prof.
Huey-Wen Lin
(Michigan State University)
Boram Yoon
Tanmoy Bhattacharya
(T-2)