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

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

1998-11-02

arxiv.org/abs/nucl-ex/9811001v5

Phys.Rev.D60:052004,1999

Physics

Nuclear Physics

Nuclear Experiment

Small addition to previous version (more info regarding inclusive data used herein). 6 pages (latex), 11 figures (postscript).

Scientific paper

10.1103/PhysRevD.60.052004

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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