Absolute differential cross sections for π±p elastic scattering at 30≤Tπ≤67 MeV

J. T. Brack, R. A. Ristinen, J. J. Kraushaar, R. A. Loveman, R. J. Peterson, G. R. Smith, D. R. Gill, D. F. Ottewell, M. E. Sevior, R. P. Trelle, E. L. Mathie, N. Grion, and R. Rui
Phys. Rev. C 41, 2202 – Published 1 May 1990
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Abstract

Absolute π±p differential cross sections have been measured at incident pion energies of 30.0, 45.0, and 66.8 MeV, using active targets of scintillator plastic (CH1.1) to detect recoil protons in coincidence with scattered pions. Statistical uncertainties are typically ±3%; systematic uncertainties are ±2%. The results are consistent with two earlier measurements by this group employing different experimental techniques at 67 MeV and higher incident pion energies. The πp cross sections are in good agreement with currently accepted phase-shift analyses, but the corresponding π+p predictions are typically 15% higher at large angles than the π+p cross sections reported here.

  • Received 1 November 1989

DOI:https://doi.org/10.1103/PhysRevC.41.2202

©1990 American Physical Society

Authors & Affiliations

J. T. Brack, R. A. Ristinen, J. J. Kraushaar, R. A. Loveman, and R. J. Peterson

  • Nuclear Physics Laboratory, Department of Physics, University of Colorado, Boulder, Colorado 80309

G. R. Smith, D. R. Gill, and D. F. Ottewell

  • TRIUMF, Vancouver, British Columbia, Canada V6T 2A3

M. E. Sevior and R. P. Trelle

  • University of British Columbia, Vancouver, British Columbia, Canada V6T 2A3

E. L. Mathie

  • University of Regina, Regina, Saskatchewan, Canada S4S 0A2

N. Grion and R. Rui

  • Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, and University of Trieste, Trieste, Italy 34127

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Vol. 41, Iss. 5 — May 1990

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