Journal
PHYSICS LETTERS B
Volume 501, Issue 3-4, Pages 209-215Publisher
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DOI: 10.1016/S0370-2693(01)00100-9
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We study the possibility of measuring parity-violating pion-nucleon coupling h(pi NN)((1)) from pi (+)-electroproton production in the threshold region. We calculate the electron-helicity asymmetry in terms of h(pi NN)((1)) and the Z-boson exchange between the electron and proton in leading-order heavy-baryon chiral perturbation theory. From the result, we demonstrate that the coupling can be determined to an accuracy of similar to 2 x 10(-7) in an experiment with incident electron energy 250 MeV, luminosity 10(38) s(-1) cm(-2), and a running time of 10(7) s. (C) 2001 Published by Elsevier Science B.V.
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