Unveiling the nucleon tensor charge at Jefferson Lab: A study of the SoLID case

Ye, Zhihong  (Medium Energy Group, Physics Division, Argonne National Lab, Lemont, IL, 60439, USA) (Department of Physics, Duke University, Durham, NC, 27708, USA) ; Sato, Nobuo (Jefferson Lab, 12000 Jefferson Avenue, Newport News, VA, 23606, USA) ; Allada, Kalyan (Laboratory of Nuclear Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA) ; Liu, Tianbo (Department of Physics, Duke University, Durham, NC, 27708, USA) ; Chen, Jian-Ping (Jefferson Lab, 12000 Jefferson Avenue, Newport News, VA, 23606, USA) ; Gao, Haiyan (Department of Physics, Duke University, Durham, NC, 27708, USA) ; Kang, Zhong-Bo (Department of Physics and Astronomy, University of California, Los Angeles, CA, 90095, USA) (Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA) ; Prokudin, Alexei  (Division of Science, Penn State Berks, Reading, PA, 19610, USA) (Jefferson Lab, 12000 Jefferson Avenue, Newport News, VA, 23606, USA) ; Sun, Peng (Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824, USA) ; Yuan, Feng (Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA)

27 January 2017

Abstract: Future experiments at the Jefferson Lab 12 GeV upgrade, in particular, the Solenoidal Large Intensity Device (SoLID), aim at a very precise data set in the region where the partonic structure of the nucleon is dominated by the valence quarks. One of the main goals is to constrain the quark transversity distributions. We apply recent theoretical advances of the global QCD extraction of the transversity distributions to study the impact of future experimental data from the SoLID experiments. Especially, we develop a simple strategy based on the Hessian matrix analysis that allows one to estimate the uncertainties of the transversity quark distributions and their tensor charges extracted from SoLID data simulation. We find that the SoLID measurements with the proton and the effective neutron targets can improve the precision of the u - and d -quark transversity distributions up to one order of magnitude in the range 0.05


Published in: Physics letters B (2017)
Published by: Elsevier
DOI: 10.1016/j.physletb.2017.01.046
License: CC-BY-3.0



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