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Properties of the K sup 0 sub s K sup 0 sub s. pi. sup 0 system produced in. pi. sup minus p interactions at 21 GeV/c

Thesis/Dissertation ·
OSTI ID:5119067
The exclusive nK{sup 0}{sub S}K{sup 0}{sub S}{pi}{sup 0} channel has been investigated in 21 GeV/c {pi}{sup {minus}}p scattering. A total of 6265 events have been identified. The resulting K{sup 0}{sub S}K{sup 0}{sub S}{pi}{sup 0} effective mass distribution indicates the production of resonances in the D(f{sub 1}(1285)) and E({eta}(1425)/{iota}(1440)) meson regions. Both resonances are found to be produced with a broader t distribution than is observed for the higher mass background. Mass and width of the D region resonance are consistent with accepted values for the D meson. The E region is consistent with production of a single wide resonance whose parameters are the same as those of the {iota}(1440), but can also be fitted with two resonance peaks.Spin and parity have been analyzed using the Zemach tensor method to perform maximum likelihood fits to Dalitz plots. This analysis confirms a 1{sup ++} assignment for the D meson, and indicates the production of 0{sup {minus}+} resonance over a quickly rising, nonresonant 1{sup ++} background in the E region. The 0{sup {minus}+} contribution in the E region is enhanced relative to the 1{sup ++} when events with t{prime} > 0.2 GeV{sup 2} are selected.
Research Organization:
Notre Dame Univ., IN (USA)
OSTI ID:
5119067
Country of Publication:
United States
Language:
English

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Related Subjects

645100 -- High Energy Physics-- Particle Interactions & Properties-Experimental
653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CALCULATION METHODS
DATA
DATA ANALYSIS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MEASURING INSTRUMENTS
MEASURING METHODS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS