Measurement of the RLT response function for π0 electroproduction at Q2=0.070 (GeV/c)2 in the N → Δ transition

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

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22 Scopus citations


Quadrupole amplitudes in the γ*N → Δ 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′ p)π0 data obtained at Q2 = 0.070 (GeV/c)2 and invariant mass of W = 1155 MeV using the out-of-plane detection technique with the OOPS spectrometers. The σLT and σT + σL response functions were isolated. These results, along with those of previous measurements at W = 1172 MeV and Q2 = 0.127 (GeV/c)2, aim in elucidating the interplay between resonant and nonresonant amplitudes.

Original languageEnglish (US)
Article number058201
Pages (from-to)582011-582014
Number of pages4
JournalPhysical Review C - Nuclear Physics
Issue number5
StatePublished - May 1 2003

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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