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Clean measurements of the nucleon axial-vector and free-neutron magnetic form factors [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy. Office of Science, 2013.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
215 : digital, PDF file
Additional Creators:
Thomas Jefferson National Accelerator Facility (U.S.), United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
We discuss the feasibility of a weak charged current experiment using a low energy electron beam. A first goal is to measure the Q^2 dependence of the axial-vector form factor g_a(Q^2). It can be measured model-independently and as robustly as for electromagnetic form factors from typical electron scattering experiments, in contrast to the methods used so far to measure g_a(Q^2). If g_a(Q^2) follows a dipole form, the axial mass can be extracted with a better accuracy than the world data altogether. The most important detection equipment would be a segmented neutron detector with good momentum and angular resolution that is symmetric about the beam direction, and covers a moderate angular range. A high intensity beam (100 uA) is necessary. Beam polarization is highly desirable as it provides a clean measurement of the backgrounds. Beam energies between 70 and 110 MeV are ideal. This range would provide a Q^2 mapping of g_a between 0.01
Report Numbers:
E 1.99:jlab-phy-13-1753
E 1.99: doe/or/23177-2614
E 1.99: arxiv:1307.2927
arxiv:1307.2927
doe/or/23177-2614
jlab-phy-13-1753
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Note:
Published through SciTech Connect.
11/01/2013.
"jlab-phy-13-1753"
" doe/or/23177-2614"
" arxiv:1307.2927"
AIP Conf. Proc. 1563
Workshop to explore physics opportunities with intense, polarized electron beams at 50-300 MeV, 14-16 March 2013, Cambridge, Massachusetts.
Deur, Alexandre P.
Funding Information:
AC05-06OR23177
View MARC record | catkey: 14705955