Study of natural spin-parity strange meson radial excitations in K/sup -/p. -->. K/sup -/. pi. /sup +/n at 11 GeV/c
Results are presented from a high statistics study of the reaction K/sup -/p ..-->.. K/sup -/..pi../sup +/n at 11 GeV/c. This data was selected offline from an approx. 1000 event/..mu..b K/sup -/p experiment run on the Large Aperture Solenoid Spectrometer (LASS) at SLAC which triggered on essentially the total inelastic cross section. This K/sup -/..pi../sup +/n sample, after cuts, contained approx. 42,000 events in the K..pi.. invariant mass region from 0.65 GeV to 2.30 GeV, and absolute value t' < 0.2 GeV/sup 2/. A spherical harmonic angular moments analysis of this data is presented, as well as an energy independent partial wave analysis (PWA) of these angular moments. The nearly uniform acceptance characteristics of this data allowed a detailed analysis, which yielded information on natural spin-parity strange meson resonances in the K..pi.. invariant mass range from 0.65 GeV to 2.30 GeV. The well established K*(895), K*(1430), and K*(1780) are observed, and clear evidence is presented for a J/sup P/ = 4/sup +/ strange meson state at a mass of 2.08 GeV. The K/sup -/..pi../sup +/ elastic scattering partial waves extracted in this PWA show unambiguous evidence for a relatively narrow S wave resonance near 1.42 GeV in the K..pi.. invariant mass. This state is a confirmation of the 0/sup +/ K(1500) seen in previous PWA's. A new higher S wave resonance is clearly seen unambiguously near 1.90 GeV. Unambiguous evidence is presented for a relatively wide P wave resonance in the 1.70 GeV region.A second new P wave resonance also is seen in two of four ambiguous partial wave solutions in the 2.10 GeV region. These resonance states are discussed within the framework of a simple harmonic oscillator quark model. In particular three of the underlying resonances are discussed as possible natural spin-parity strange meson radial excitations.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 6576085
- Report Number(s):
- SLAC-238; TRN: 81-006435
- Country of Publication:
- United States
- Language:
- English
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A Study of Leading Strange Meson Resonances And Spin-Orbit Splittings in K-p → K-π+n at 11 GeV/c [Thesis]
Study of leading strange meson resonances and spin-orbit splittings in K/sup -/p. -->. K/sup -/. pi. /sup +/n at 11 GeV/c
Related Subjects
KAON MINUS-PROTON INTERACTIONS
K-1420 RESONANCES
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K-892 RESONANCES
ANGULAR MOMENTUM
ARGAND DIAGRAMS
ELASTIC SCATTERING
EXPERIMENTAL DATA
GEV RANGE 10-100
PARTIAL WAVES
QUARK MODEL
STATISTICAL MODELS
BOSONS
COMPOSITE MODELS
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DIAGRAMS
ELEMENTARY PARTICLES
ENERGY RANGE
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GEV RANGE
HADRON-HADRON INTERACTIONS
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INFORMATION
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MATHEMATICAL MODELS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE MODELS
RESONANCE PARTICLES
SCATTERING
SCATTERPLOTS
STRANGE PARTICLES
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VECTOR MESONS
645104* - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Meson-Induced Interactions- (-1987)