Measurement of the partial cross sections [sigma][subscript TT], [sigma][subscript LT], and ([sigma][subscript T] + [epsilon][sigma][subscript L]) of the [superscript 1]H(e,e'[pi][superscript +])n reaction in the [delta](1232) resonance

Measurement of the partial cross sections [sigma][subscript TT], [sigma][subscript LT], and ([sigma][subscript T] + [epsilon][sigma][subscript L]) of the [superscript 1]H(e,e'[pi][superscript +])n reaction in the [delta](1232) resonance

Sarty, Adam James, 1965-; Kirkpatrick, J. M.; Sparveris, N. F.; Nakagawa, I.; Bernstein, A. M.; Alarcon, R.; Bertozzi, W.; Botto, T.; Bourgeois, P.; Calarco, J.
Date:   2011-08-26
Type:   Text
ISSN:  0556-2813

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Physical Review C 84(2), 028201. (2011)

Abstract:

We report precision [superscript 1]H(e,e'[pi][superscript +])n measurements in the [delta](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 [pi][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.

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Subject:
  • Field theory (Physics)
  • Particles (Nuclear physics) -- Chirality

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Published Version: http://dx.doi.org/10.1103/PhysRevC.84.028201
 
 

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