Speaker
Dr
Sergey Syritsyn
(RIKEN-BNL Research Center)
Description
I will report initial nucleon structure results computed on lattices with 2+1 dynamical Moebius domain wall fermions at the physical point generated by RBC and UKQCD. At this stage, we evaluate only connected quark contributions. In particular, I will discuss the nucleon electric and magnetic radii, quark contributions to the nucleon spin, the nucleon axial charge, and the quark momentum fraction. From the currently available statistics, we estimate that within a year our stochastic + excited states-systematic errors for the nucleon electric radius will approach the level of the discrepancy between the two experimental values. To reduce the computational cost of our calculations, we extensively use acceleration techniques such as low-eigenmode deflation and all-mode-averaging.
Primary author
Dr
Sergey Syritsyn
(RIKEN-BNL Research Center)
Co-authors
Dr
Andrew Pochinsky
(Massachusetts Institute of Technology)
Chulwoo Jung
(Brookhaven National Laboratory)
Dr
Jeremy Green
(Institut für Kernphysik, Johannes Gutenberg-Universität Mainz)
Prof.
John Negele
(Massachusetts Institute of Technology)
Dr
Meifeng Lin
(Brookhaven National Laboratory)
Michael Engelhardt
(New Mexico State University)
Dr
Shigemi Ohta
(Institute of Particle and Nuclear Physics, KEK)
Dr
Stefan Krieg
(Forschungszentrum Juelich GmbH/Wuppertal University)
Dr
Stefan Meinel
(Massachusetts Institute of Technology)
Taku Izubuchi
(BNL HET)
Prof.
Thomas Blum
(University of Connecticut)
