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Electroproduction of the S11(1535) Resonance at High Momentum Transfer

The Jefferson Lab E94014 collaboration·C. S. Armstrong
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Abstract

The differential cross section for the process p(e,e'p)eta has been measured at Q^2 = 2.4 and 3.6 (GeV/c)^2 at center-of-mass energies encompassing the S11(1535) resonance. The latter point is the highest-Q^2 exclusive measurement of this process to date. The resonance width and the helicity-1/2 transition amplitude are extracted from the data, and evidence for the possible onset of scaling in this reaction is shown. A lower bound of approximately 0.45 is placed on the S11(1535) to eta branching fraction.

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The Jefferson Lab E94014 collaboration, C. S. Armstrong. 1999-05-10. Electroproduction of the S11(1535) Resonance at High Momentum Transfer. https://doi.org/10.1103/physrevd.60.052004

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