Elastic scattering of 500-MeV polarized protons from Ca40,48, Zr90, and Pb208, and breakdown of the impulse approximation at small momentum transfer

G. W. Hoffmann; L. Ray; M. L. Barlett; R. Fergerson; J. McGill; E. C. Milner; Kamal K. Seth; D. Barlow; M. Bosko; S. Iverson; M. Kaletka; A. Saha; D. Smith

doi:10.1103/PhysRevLett.47.1436

Elastic scattering of 500-MeV polarized protons from Ca40,48, Zr90, and Pb208, and breakdown of the impulse approximation at small momentum transfer

G. W. Hoffmann^*, L. Ray, M. L. Barlett, R. Fergerson, J. McGill, E. C. Milner, Kamal K. Seth, D. Barlow, M. Bosko, S. Iverson, M. Kaletka, A. Saha, D. Smith

^*Corresponding author for this work

Physics and Astronomy

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Abstract

New 500-MeV ppol+Ca40,48, Zr90, and Pb208 elastic d d and Ay () data are presented. The small-momentum-transfer data are not reproduced by the second-order Kerman-McManus-Thaler optical potential which uses free nucleon-nucleon amplitudes. The systematics of these results, taken together with previous 800-MeV results, suggest that medium modifications to the NN t matrix are required to obtain an accurate description of the 500-800-MeV proton-nucleus elastic data in general.

Original language	English (US)
Pages (from-to)	1436-1440
Number of pages	5
Journal	Physical review letters
Volume	47
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.47.1436
State	Published - 1981

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General Physics and Astronomy

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Hoffmann, G. W., Ray, L., Barlett, M. L., Fergerson, R., McGill, J., Milner, E. C., Seth, K. K., Barlow, D., Bosko, M., Iverson, S., Kaletka, M., Saha, A., & Smith, D. (1981). Elastic scattering of 500-MeV polarized protons from Ca40,48, Zr90, and Pb208, and breakdown of the impulse approximation at small momentum transfer. Physical review letters, 47(20), 1436-1440. https://doi.org/10.1103/PhysRevLett.47.1436

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title = "Elastic scattering of 500-MeV polarized protons from Ca40,48, Zr90, and Pb208, and breakdown of the impulse approximation at small momentum transfer",

abstract = "New 500-MeV ppol+Ca40,48, Zr90, and Pb208 elastic d d and Ay () data are presented. The small-momentum-transfer data are not reproduced by the second-order Kerman-McManus-Thaler optical potential which uses free nucleon-nucleon amplitudes. The systematics of these results, taken together with previous 800-MeV results, suggest that medium modifications to the NN t matrix are required to obtain an accurate description of the 500-800-MeV proton-nucleus elastic data in general.",

author = "Hoffmann, {G. W.} and L. Ray and Barlett, {M. L.} and R. Fergerson and J. McGill and Milner, {E. C.} and Seth, {Kamal K.} and D. Barlow and M. Bosko and S. Iverson and M. Kaletka and A. Saha and D. Smith",

year = "1981",

doi = "10.1103/PhysRevLett.47.1436",

language = "English (US)",

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Hoffmann, GW, Ray, L, Barlett, ML, Fergerson, R, McGill, J, Milner, EC, Seth, KK, Barlow, D, Bosko, M, Iverson, S, Kaletka, M, Saha, A & Smith, D 1981, 'Elastic scattering of 500-MeV polarized protons from Ca40,48, Zr90, and Pb208, and breakdown of the impulse approximation at small momentum transfer', Physical review letters, vol. 47, no. 20, pp. 1436-1440. https://doi.org/10.1103/PhysRevLett.47.1436

TY - JOUR

T1 - Elastic scattering of 500-MeV polarized protons from Ca40,48, Zr90, and Pb208, and breakdown of the impulse approximation at small momentum transfer

AU - Hoffmann, G. W.

AU - Ray, L.

AU - Barlett, M. L.

AU - Fergerson, R.

AU - McGill, J.

AU - Milner, E. C.

AU - Seth, Kamal K.

AU - Barlow, D.

AU - Bosko, M.

AU - Iverson, S.

AU - Kaletka, M.

AU - Saha, A.

AU - Smith, D.

PY - 1981

Y1 - 1981

N2 - New 500-MeV ppol+Ca40,48, Zr90, and Pb208 elastic d d and Ay () data are presented. The small-momentum-transfer data are not reproduced by the second-order Kerman-McManus-Thaler optical potential which uses free nucleon-nucleon amplitudes. The systematics of these results, taken together with previous 800-MeV results, suggest that medium modifications to the NN t matrix are required to obtain an accurate description of the 500-800-MeV proton-nucleus elastic data in general.

AB - New 500-MeV ppol+Ca40,48, Zr90, and Pb208 elastic d d and Ay () data are presented. The small-momentum-transfer data are not reproduced by the second-order Kerman-McManus-Thaler optical potential which uses free nucleon-nucleon amplitudes. The systematics of these results, taken together with previous 800-MeV results, suggest that medium modifications to the NN t matrix are required to obtain an accurate description of the 500-800-MeV proton-nucleus elastic data in general.

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U2 - 10.1103/PhysRevLett.47.1436

DO - 10.1103/PhysRevLett.47.1436

M3 - Article

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SN - 0031-9007

VL - 47

SP - 1436

EP - 1440

JO - Physical review letters

JF - Physical review letters

IS - 20

ER -

Elastic scattering of 500-MeV polarized protons from Ca40,48, Zr90, and Pb208, and breakdown of the impulse approximation at small momentum transfer

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