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Title: Polarization measurement of the. sigma. /sup +/ produced in the line-reversed reactions. pi. /sup +/p. -->. K/sup +/. sigma. /sup +/ and K/sup -/p. -->. pi. /sup -/. sigma. /sup +/ at 7 and 11. 6 GeV/c

Journal Article · · Phys. Rev. Lett.; (United States)
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The polarization of the ..sigma../sup +/ has been measured for the line-reversed reactions ..pi../sup +/p ..-->.. K/sup +/..sigma../sup +/ and K/sup -/p ..-->.. ..pi../sup -/..sigma../sup +/ at 7 and 11.6 GeV/c using the SLAC Hybrid Facility. Since the ..sigma../sup +/ decay is observed in the bubble chamber, the trigger of the flash lamps on a fast K/sup +/(..pi../sup +/) did not bias the polarization measurements. We find that the ..sigma../sup +/ polarizations from the two reactions have opposite signs but similar magnitude and are in much better agreement with the predictions of weak exchange degeneracy than previous lower-energy comparisons.

Research Organization:
The Blackett Laboratory, Imperial College, London SW7 2AZ, Great Britain
OSTI ID:
7208040
Journal Information:
Phys. Rev. Lett.; (United States), Vol. 40:11
Country of Publication:
United States
Language:
English

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
KAON MINUS-PROTON INTERACTIONS
EXCHANGE DEGENERACY
PARTICLE PRODUCTION
PION PLUS-PROTON INTERACTIONS
SIGMA PLUS
BUBBLE CHAMBERS
DECAY
GEV RANGE 01-10
GEV RANGE 10-100
KAONS PLUS
PIONS MINUS
POLARIZATION
BARYONS
BOSONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GAS TRACK DETECTORS
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
HYPERONS
INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
KAONS
MEASURING INSTRUMENTS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
PARTICLE INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
SIGMA PARTICLES
STRANGE PARTICLES
645104* - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Meson-Induced Interactions- (-1987)