Asymmetry measurements in p--p scattering with polarized beams and targets up to 12 GeV/c. [Scattering amplitudes, spin parameters, total cross sections]
The processes of proton--proton scattering for various spin directions was investigated in the beam momentum range of 1 to 12 GeV/c. A striking energy dependence was observed at p/sub lab/ = 1 to 4 GeV/c, especially in ..delta.. sigma/sub L/, the total cross section difference in the longitudinal spin states. The rapid energy dependence has been interpreted as evidence for the formation of diproton resonances. Various pp scattering parameters were measured at 6 GeV/c, including 3-spin parameters, which are sufficient to determine pp elastic scattering amplitudes in a model independent way at 0.2 < absolute value of t < 0.8 (GeV/c)/sup 2/. Measurements of spin--spin correlation parameters were extended to higher t and higher energies, revealing the importance of the spin dependent interaction. These measurements may shed light on the nature of the constituents and their interactions. 24 references.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6798187
- Report Number(s):
- ANL-HEP-CP-78-37; CONF-780826-6; TRN: 79-000693
- Resource Relation:
- Conference: 19. conference on high energy physics, Tokyo, Japan, 23 Aug 1978
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PROTON-PROTON INTERACTIONS
ELASTIC SCATTERING
ASYMMETRY
BARYON RESONANCES
ENERGY DEPENDENCE
GEV RANGE 01-10
GEV RANGE 10-100
LINEAR MOMENTUM
POLARIZED BEAMS
POLARIZED TARGETS
SCATTERING AMPLITUDES
SPIN
TOTAL CROSS SECTIONS
TRANSVERSE MOMENTUM
AMPLITUDES
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
BARYONS
BEAMS
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PROTON-NUCLEON INTERACTIONS
RESONANCE PARTICLES
SCATTERING
TARGETS
645103* - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Interactions & Baryon & Meson Properties