Measurement of the R-LT response function for pi(0) electroproduction at Q(2)=0.070 (GeV/c)(2) in the N ->Delta transition

Academic Article

Abstract

  • Quadrupole amplitudes in the $\gamma^{*}N\to\Delta$ 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$(e,e^\prime p)\pi^0$ 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 $\sigma_{LT}$ and $\sigma_{T}+\epsilon\cdot$ $\sigma_{L}$ 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.
  • Authors

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

    Publication Date

  • May 2003
  • Published In

    Keywords

  • nucl-ex
  • Digital Object Identifier (doi)

    Start Page

  • 582011
  • End Page

  • 582014
  • Volume

  • 67
  • Issue

  • 5