Confirmation of exchange-degeneracy predictions in the line-reversed reactions:. pi. /sup +/p. -->. K/sup +/Y* (1385) and K/sup -/p. -->. pi. /sup -/Y* (1385) at 11. 5 GeV/c

Journal Article · Mon Sep 04 00:00:00 EDT 1978 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.41.676· OSTI ID:6615407

Ballam, J; Bouchez, J; Carroll, J T; Cautis, C V; Chadwick, G B; Chaloupka, V; Field, R C; Freytag, D R; Lewis, R A; Minard, M N; Moffeit, K C; Stevens, R A

We have measured in a single experimental setup the differential cross sections and polarizations of the Y* (1385) produced in the two line-reversed reactions ..pi../sup +/p ..-->.. K/sup +/Y* (1385) (260 eV/..mu..b) and K/sup -/p ..-->.. ..pi../sup -/Y* (1385) (180 eV/..mu..b) at 11.5 GeV/c. We compare these results to ..sigma../sup +/ production in the same experiment. The data have been derived from a triggered bubble-chamber experiment using the SLAC Hybrid Facility. We find that both helicity-flip--dominated (Y*) and helicity-nonflip--dominated (..sigma..) processes are consistent with weak--exchange-degeneracy predictions.

• Research Organization: Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305
• OSTI ID: 6615407
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 41:10
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
KAON MINUS-PROTON INTERACTIONS
DIFFERENTIAL CROSS SECTIONS
EXCHANGE DEGENERACY
PION PLUS-PROTON INTERACTIONS
SIGMA PLUS
PARTICLE PRODUCTION
SIGMA-1385 RESONANCES
ANGULAR DISTRIBUTION
BUBBLE CHAMBERS
GEV RANGE 10-100
HELICITY
MASS SPECTRA
POLARIZATION
POLARIZED PRODUCTS
BARYON RESONANCES
BARYONS
CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GAS TRACK DETECTORS
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
HYPERONS
INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
MEASURING INSTRUMENTS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
RADIATION DETECTORS
RESONANCE PARTICLES
SIGMA PARTICLES
SPECTRA
STRANGE PARTICLES
Y)RESONANCES
645104* - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Meson-Induced Interactions- (-1987)