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Phys. Rev. Lett. 61, 400–403 (1988)

Δ Electroproduction and Inelastic Charge Scattering from Carbon and Iron

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D. T. Baran1,3, B. F. Filippone2, D. Geesaman1, M. Green1,*, R. J. Holt1, H. E. Jackson1, J. Jourdan2, R. D. McKeown2, R. G. Milner2, J. Morgenstern4, D. H. Potterveld2, R. E. Segel1,3, P. Seidl1,†, R. C. Walker2, and B. Zeidman1
1Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
2W. K. Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125
3Department of Physics, Northwestern University, Evanston, Illinois 60201
4Service de Physique Nucleaire-Haute Energie, Centre d'Etudes Nucléaires de Saclay, 91191 Gif-sur-Yvette, France

Received 31 March 1988; published in the issue dated 25 July 1988

Electroproduction of the Δ isobar in C and Fe has been studied for incident electrons with energies between 0.6 and 1.6 GeV. A longitudinal-transverse decomposition of the inclusive cross section has been made for qμ2=0.1 (GeV/c)2. The residual longitudinal cross sections measured do not provide the additional strength needed above the quasifree region to satisfy the Coulomb sum rule. The transverse cross sections are in good agreement with data from photoabsorption.

© 1988 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.61.400
DOI:
10.1103/PhysRevLett.61.400
PACS:
25.30.Fj

*Present address: LeCroy Corporation, 700 S. Main, Spring Valley, NY 10977-6499.

†Present address: Nuclear Science Division, Building 70A, Lawrence Berkeley Laboratory, Berkeley, CA 94720.

 
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