Difficulty in determining the pion form factor at high Q^{2}
- 1 October 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 65 (14), 1717-1720
- https://doi.org/10.1103/physrevlett.65.1717
Abstract
We reexamine the determination of the pion form factor at large spacelike via the reaction ep→en and find that, because of the magnitude of the pion-nucleon form factor and the existence of competing hitherto uncalculated processes in QCD, the pion electromagnetic form factor is not sufficiently well determined at higher to compare with the expected scaling prediction of QCD. Instead, we conclude that the best way to get information about the pion electromagnetic form factor is to study production.
Keywords
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