Quasielastic Scattering of Polarized Electrons from Polarized He3 and Measurement of the Neutron's Form Factors

A. K. Thompson; A. M. Bernstein; T. E. Chupp; D. J. Deangelis; G. E. Dodge; G. Dodson; K. A. Dow; M. Farkhondeh; W. Fong; J. Y. Kim; R. A. Loveman; J. M. Richardson; H. Schmieden; D. R. Tieger; T. C. Yates; M. E. Wagshul; J. D. Zumbro

doi:10.1103/PhysRevLett.68.2901

Quasielastic Scattering of Polarized Electrons from Polarized He3 and Measurement of the Neutron's Form Factors

A. K. Thompson, A. M. Bernstein, T. E. Chupp, D. J. Deangelis, G. E. Dodge, G. Dodson, K. A. Dow, M. Farkhondeh, W. Fong, J. Y. Kim, R. A. Loveman, J. M. Richardson, H. Schmieden, D. R. Tieger, T. C. Yates, M. E. Wagshul, J. D. Zumbro

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Abstract

We report measurements of asymmetries in quasielastic scattering of polarized electrons from polarized He3 at Q2=-0.2 GeV/c)2. We measure ATe=(-2.6+0.9+0.46)% and ATLe=(+1.75+1.2+0.31)%. The asymmetry ATe depends predominantly on the previously measured neutron magnetic form factor and provides a test of theories of spin-dependent quasielastic scattering. Our result for ATe is consistent with a previously reported measurement and suggests that the current theoretical picture is incomplete and final-state-interaction and meson-exchange corrections are necessary if the electric form factor of the neutron is to be reliably extracted from the asymmetry of ATLe.

Original language	English (US)
Pages (from-to)	2901-2904
Number of pages	4
Journal	Physical Review Letters
Volume	68
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.68.2901
State	Published - 1992
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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Thompson, A. K., Bernstein, A. M., Chupp, T. E., Deangelis, D. J., Dodge, G. E., Dodson, G., Dow, K. A., Farkhondeh, M., Fong, W., Kim, J. Y., Loveman, R. A., Richardson, J. M., Schmieden, H., Tieger, D. R., Yates, T. C., Wagshul, M. E., & Zumbro, J. D. (1992). Quasielastic Scattering of Polarized Electrons from Polarized He3 and Measurement of the Neutron's Form Factors. Physical Review Letters, 68(19), 2901-2904. https://doi.org/10.1103/PhysRevLett.68.2901

Thompson, AK, Bernstein, AM, Chupp, TE, Deangelis, DJ, Dodge, GE, Dodson, G, Dow, KA, Farkhondeh, M, Fong, W, Kim, JY, Loveman, RA, Richardson, JM, Schmieden, H, Tieger, DR, Yates, TC, Wagshul, ME & Zumbro, JD 1992, 'Quasielastic Scattering of Polarized Electrons from Polarized He3 and Measurement of the Neutron's Form Factors', Physical Review Letters, vol. 68, no. 19, pp. 2901-2904. https://doi.org/10.1103/PhysRevLett.68.2901

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title = "Quasielastic Scattering of Polarized Electrons from Polarized He3 and Measurement of the Neutron's Form Factors",

abstract = "We report measurements of asymmetries in quasielastic scattering of polarized electrons from polarized He3 at Q2=-0.2 GeV/c)2. We measure ATe=(-2.6+0.9+0.46)% and ATLe=(+1.75+1.2+0.31)%. The asymmetry ATe depends predominantly on the previously measured neutron magnetic form factor and provides a test of theories of spin-dependent quasielastic scattering. Our result for ATe is consistent with a previously reported measurement and suggests that the current theoretical picture is incomplete and final-state-interaction and meson-exchange corrections are necessary if the electric form factor of the neutron is to be reliably extracted from the asymmetry of ATLe.",

author = "Thompson, {A. K.} and Bernstein, {A. M.} and Chupp, {T. E.} and Deangelis, {D. J.} and Dodge, {G. E.} and G. Dodson and Dow, {K. A.} and M. Farkhondeh and W. Fong and Kim, {J. Y.} and Loveman, {R. A.} and Richardson, {J. M.} and H. Schmieden and Tieger, {D. R.} and Yates, {T. C.} and Wagshul, {M. E.} and Zumbro, {J. D.}",

year = "1992",

doi = "10.1103/PhysRevLett.68.2901",

language = "English (US)",

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AU - Thompson, A. K.

AU - Bernstein, A. M.

AU - Chupp, T. E.

AU - Deangelis, D. J.

AU - Dodge, G. E.

AU - Dodson, G.

AU - Dow, K. A.

AU - Farkhondeh, M.

AU - Fong, W.

AU - Kim, J. Y.

AU - Loveman, R. A.

AU - Richardson, J. M.

AU - Schmieden, H.

AU - Tieger, D. R.

AU - Yates, T. C.

AU - Wagshul, M. E.

AU - Zumbro, J. D.

PY - 1992

Y1 - 1992

N2 - We report measurements of asymmetries in quasielastic scattering of polarized electrons from polarized He3 at Q2=-0.2 GeV/c)2. We measure ATe=(-2.6+0.9+0.46)% and ATLe=(+1.75+1.2+0.31)%. The asymmetry ATe depends predominantly on the previously measured neutron magnetic form factor and provides a test of theories of spin-dependent quasielastic scattering. Our result for ATe is consistent with a previously reported measurement and suggests that the current theoretical picture is incomplete and final-state-interaction and meson-exchange corrections are necessary if the electric form factor of the neutron is to be reliably extracted from the asymmetry of ATLe.

AB - We report measurements of asymmetries in quasielastic scattering of polarized electrons from polarized He3 at Q2=-0.2 GeV/c)2. We measure ATe=(-2.6+0.9+0.46)% and ATLe=(+1.75+1.2+0.31)%. The asymmetry ATe depends predominantly on the previously measured neutron magnetic form factor and provides a test of theories of spin-dependent quasielastic scattering. Our result for ATe is consistent with a previously reported measurement and suggests that the current theoretical picture is incomplete and final-state-interaction and meson-exchange corrections are necessary if the electric form factor of the neutron is to be reliably extracted from the asymmetry of ATLe.

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Quasielastic Scattering of Polarized Electrons from Polarized He3 and Measurement of the Neutron's Form Factors

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