Measurement of the partial cross sections σ[subscript TT], σ[subscript LT], and (σ[subscript T] + ɛσ[subscript  L]) of the [superscript 1]H(e, e′π[subscript +])n reaction in the Δ(1232) resonance

Kirkpatrick, J.; Sparveris, N.; Nakagawa, I.; Bernstein, A.; Alarcon, R.; Bertozzi, W.; Botto, T.; Bourgeois, P.; Calarco, J.; Casagrande, F.; Distler, M.; Dow, K.; Farkondeh, M.; Georgakopoulos, S.; Gilad, S.; Hicks, R.; Holtrop, A.; Hotta, A.; Jiang, X.; Karabarbounis, A.; Kowalski, S.; Milner, R.; Miskimen, R.; Papanicolas, C.; Sarty, A.; Sato, Y.; Širca, S.; Shaw, J.; Six, E.; Stave, S.; Stiliaris, E.; Tamae, T.; Tsentalivich, G.; Tschalaer, C.; Turchinetz, W.; Zhou, Z.-L.; Zwart, T.

Author(s)

Nakagawa, I.; Bernstein, Aron M.; Bertozzi, William; Botto, Tancredi; Casagrande, F.; ... Show more

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Abstract

We report precision [superscript 1]H(e, e′π[superscript +])n measurements in the Δ(1232) resonance at Q[superscript 2]=0.127(GeV/c)[superscript 2] obtained at the MIT-Bates out-of-plane scattering facility. These are the lowest, but nonzero, Q[superscript 2] measurements in the π[superscript +] channel. The data offer tests of the theoretical calculations, particularly of the background amplitude contributions. The chiral effective field theory and Sato-Lee model calculations are not in agreement with this experiment.

Date issued

2011-08

URI

http://hdl.handle.net/1721.1/71193

Department

Massachusetts Institute of Technology. Department of Physics

Journal

Physical Review C

Publisher

American Physical Society

Citation

Kirkpatrick, J. et al. “Measurement of the Partial Cross Sections σ_{TT}, σ_{LT}, and (σ_{T}+ ɛσ_{L}) of the ^{1}H(e,e^{′}π^{+})n Reaction in the Δ(1232) Resonance.” Physical Review C 84.2 (2011). ©2011 American Physical Society

Version: Final published version

ISSN

0556-2813

1089-490X

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