Measurement of the R$_{LT}$ response function for $π^0$ electroproduction at $Q^2$ = 0.070 (GeV/c)$^2$ in the $N\toΔ$ transition}

N. Sparveris; R. Alarcon; D. Barkhuff; A. Bernstein; W. Bertozzi; J. Calarco; F. Casagrande; J. Chen; J. Comfort; M. Distler; G. Dodson; A. Dooley; K. Dow; M. Farkondeh; S. Gilad; R. Hicks; M. Holtrop; A. Hotta; X. Jiang; N. Kaloskamis; A. Karabarbounis; S. Kowalski; C. Kunz; D. Margaziotis; C. Mertz; R. Milner; R. Miskimen; I. Nakagawa; C. Papanicolas; M. Pavan; G. Peterson; A. Ramirez; D. Rowntree; A. Sarty; J. Shaw; E. Six; S. Soong; S. Stiliaris; D. Tieger; C. Tschalaer; W. Turchinetz; C. Vellidis; G. Warren; A. Young; J. Zhao; Z. Zhou; T. Zwart

doi:10.1103/physrevc.67.058201

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Measurement of the R$_{LT}$ response function for $π^0$ electroproduction at $Q^2$ = 0.070 (GeV/c)$^2$ in the $N\toΔ$ transition}

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Abstract

Quadrupole amplitudes in the $γ^{*}N\toΔ$ transition are associated with the issue of nucleon deformation. A search for these small amplitudes has been the focus of a series of measurements undertaken at Bates/MIT by the OOPS collaboration. We report on results from H$(e,e^\prime p)π^0$ data obtained at $Q^2= 0.070$ (GeV/c)$^2$ and invariant mass of W=1155 MeV using the out-of-plane detection technique with the OOPS spectrometers. The $σ_{LT}$ and $σ_{T}+ε\cdot$ $σ_{L}$ response functions were isolated. These results, along with those of previous measurements at $W$=1172 MeV and $Q^2= 0.127$ (GeV/c)$^2$, aim in elucidating the interplay between resonant and non resonant amplitudes.

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N. Sparveris, R. Alarcon, D. Barkhuff, A. Bernstein, W. Bertozzi, J. Calarco, F. Casagrande, J. Chen, J. Comfort, M. Distler, G. Dodson, A. Dooley, K. Dow, M. Farkondeh, S. Gilad, R. Hicks, M. Holtrop, A. Hotta, X. Jiang, N. Kaloskamis, A. Karabarbounis, S. Kowalski, C. Kunz, D. Margaziotis, C. Mertz, R. Milner, R. Miskimen, I. Nakagawa, C. Papanicolas, M. Pavan, G. Peterson, A. Ramirez, D. Rowntree, A. Sarty, J. Shaw, E. Six, S. Soong, S. Stiliaris, D. Tieger, C. Tschalaer, W. Turchinetz, C. Vellidis, G. Warren, A. Young, J. Zhao, Z. Zhou, T. Zwart. 2002-12-20. Measurement of the R$_{LT}$ response function for $π^0$ electroproduction at $Q^2$ = 0.070 (GeV/c)$^2$ in the $N\toΔ$ transition}. https://doi.org/10.1103/physrevc.67.058201

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