Determination of the longitudinal and the transverse part in π+ electroproduction

doi:10.1016/0550-3213(78)90523-0

Nuclear Physics B

Volume 137, Issue 3, 22 May 1978, Pages 294-300

https://doi.org/10.1016/0550-3213(78)90523-0 Get rights and content

Abstract

We report on an experiment where the different contributions from the transverse and longitudinal polarization of the virtual photon are measured separately for the reaction e⁻p→e⁻π⁺n. The data taken above the resonance region at small ∣t∣ values in the q² range of ∣q²∣ < 0.5 GeV² show a clear dominance of the longitudinal part of the cross section and are well described by a generalized Born-term model. Using this model the electromagnetic form factor of the pion is determined. At q² = −0.35 GeV² one gets F_π = 0.598 ± 0.021.

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Nuclear Physics B

Abstract

References (9)

Phys. Lett.

Nucl. Phys.

Nucl. Phys.

Nucl. Phys.

Cited by (107)

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Charged pion production in the annihilation reactions e<sup>+</sup> + e<sup>−</sup> → p + n̄ + π<sup>−</sup> and e<sup>+</sup> + e<sup>−</sup> → n + p̄ + π<sup>+</sup>