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Analyzing power measurements in pion-deuteron breakup at intermediate energies

Journal Article · · Physical Review, C
; ; ; ; ;  [1]; ; ; ;  [2]; ; ; ; ;  [3];  [4];  [5]
  1. Department of Physics, University of Regina, Regina, Saskatchewan, S4S 0A2 (Canada)
  2. Department of Physics, University of British Columbia, Vancouver, British Columbia, V6T 1Z1 (Canada)
  3. TRIUMF, Vancouver, British Columbia, V6T 2A3 (Canada)
  4. Escuela Superior de Fisica y Matematicas, Instituto Politechnico Nacional, Edificio 9, 07738 Mexico D.F. (Mexico)
  5. Western Kentucky University, Bowling Green, Kentucky 42101 (United States)
+ Show Author Affiliations
As part of an experimental study of the {pi}{ital NN} system, the pion-deuteron breakup reaction {pi}{sup +}{ital {rvec d}}{r_arrow}{ital pn}{pi}{sup +} was investigated at intermediate energies. Distributions of the vector analyzing power {ital iT}{sub 11} versus outgoing proton momentum {ital P}{sub {ital p}} are presented for 36 {pi}{ital p} angle pairs in the range of scattering angles 20{degree}{le}{theta}{sub {ital p}}{le}51{degree}, 62{degree}{le}{theta}{sub {pi}}{le}124{degree} at 228 and 134 MeV. These include 7 previously unmeasured angle pairs at 228 MeV and 20 new pairs at 134 MeV. In all regions of overlap with previous measurements, there is excellent agreement. There is generally excellent agreement with relativistic Faddeev predictions, except in the {ital np} final-state interaction region at 228 MeV. This is in contrast to the cross-section measurements, which are not well described by the theory.
OSTI ID:
122386
Journal Information:
Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 52; ISSN 0556-2813; ISSN PRVCAN
Country of Publication:
United States
Language:
English

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Related Subjects

66 PHYSICS
BREAKUP REACTIONS
CROSS SECTIONS
DISTRIBUTION
FINAL-STATE INTERACTIONS
PION-DEUTERON INTERACTIONS
POLARIZATION-ASYMMETRY RATIO
PROTONS