Measurements of low-energy pion-deuteron differential cross-sections and vector analyzing powers
Thesis/Dissertation
·
OSTI ID:5638500
Absolute [pi][sup [+-]]d elastic differential cross sections have been measured for several scattering angles at incident pion energies of 30, 50, and 65 MeV. The measurements were performed at the TRIUMF cyclotron in Vancouver, Canada in 1987 and 1990. The precision of the measurement (5% or better) was as good or better than that obtained by previous measurements at similar energies. Pion polarities were treated symmetrically so a reliable calculation of the charge asymmetry was possible using the data. The measurements roughly double the quantity of existing [pi]d elastic differential cross section data. At 65 MeV there has been a controversy over the data, which the present work seeks to resolve. The results at 65 MeV disagree with the controversial data. Also measured was the [pi][sup +]d vector analyzing power for the elastic reaction at several scattering angles at an incident pion energy of 50 MeV. These experiments were also conducted at TRIUMF using a cryogenic polarized target and a magnetic spectrometer. There were no previous measurements of the vector analyzing power at this energy for the [pi]d system. The results are precise enough (10%-20% uncertainties) to distinguish between competing theoretical predictions for this observable.
- Research Organization:
- Colorado Univ., Boulder, CO (United States)
- OSTI ID:
- 5638500
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
662340* -- Hadron Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANALYZING POWER
ASYMMETRY
BOSONS
CROSS SECTIONS
CYCLIC ACCELERATORS
CYCLOTRONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY RANGE
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
ISOCHRONOUS CYCLOTRONS
MAGNETIC SPECTROMETERS
MEASURING INSTRUMENTS
MESON-BARYON INTERACTIONS
MESONS
MEV RANGE
MEV RANGE 10-100
PARTICLE INTERACTIONS
PION-DEUTERON INTERACTIONS
PIONS
PIONS PLUS
PSEUDOSCALAR MESONS
SCATTERING
SPECTROMETERS
TRIUMF CYCLOTRON
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANALYZING POWER
ASYMMETRY
BOSONS
CROSS SECTIONS
CYCLIC ACCELERATORS
CYCLOTRONS
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY RANGE
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
ISOCHRONOUS CYCLOTRONS
MAGNETIC SPECTROMETERS
MEASURING INSTRUMENTS
MESON-BARYON INTERACTIONS
MESONS
MEV RANGE
MEV RANGE 10-100
PARTICLE INTERACTIONS
PION-DEUTERON INTERACTIONS
PIONS
PIONS PLUS
PSEUDOSCALAR MESONS
SCATTERING
SPECTROMETERS
TRIUMF CYCLOTRON