Phys. Rev. D 69, 054022 (2004) [5 pages]Single-spin polarization effects and the determination of timelike proton form factorsReceived 2 December 2003; published 23 March 2004 We show that measurements of the proton’s polarization in e+e-→pp̅ strongly discriminate between analytic forms of models which fit the proton form factors in the spacelike region. In particular, the single-spin asymmetry normal to the scattering plane measures the relative phase difference between the timelike GE and GM form factors. The expected proton polarization in the timelike region is large, of the order of several tens of percent. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.69.054022
DOI:
10.1103/PhysRevD.69.054022
PACS:
13.88.+e, 13.40.Gp, 13.66.Bc
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