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Study of K. pi. scattering using the reactions K/sup +/-p. -->. K/sup +/-. pi. /sup +/n at 13 GeV. [Production amplitudes, total cross sections, isospin s waves]

Conference ·
OSTI ID:5259285
; ; ; ; ;
High statistics data for the reactions K/sup + -/p ..-->.. K/sup + -/..pi../sup +/n at 13 GeV were obtained in a spectrometer experiment performed at SLAC. For each reaction, a t-dependent parametrization of the production amplitudes provides information on both the K..pi.. mass dependence of the production mechanisms and on K..pi.. scattering. Knowledge of the t-dependence then allows a calculation of the K..pi.. partial wave amplitudes for K..pi.. masses from 0.7 to 1.9 GeV. Besides the leading J/sup P/ = 1/sup -/, 2/sup +/, and 3/sup -/ resonances at M/sub K..pi../ = 0.896, 1.433, and 1.78 GeV, there is evidence in two of the four possible partial wave solutions for a broad P-wave resonant-like structure in the region of 1700 MeV. the K/sup +/..pi../sup +/ reaction is dominated by S-wave scattering with a total cross section of 5.2 mb. The I = /sup 1///sub 2/ S-wave magnitude rises slowly and smoothly to a maximum near 1400 MeV, but then decreases rapidly between 1400 and 1600 MeV. This structure may possibly be associated with an S-wave resonance near 1500 MeV. Both the I = /sup 1///sub 2/ S-wave below 1400 MeV and the I = /sup 3///sub 2/ S-wave are well described by an effective range parametrization.
Research Organization:
McGill Univ., Montreal, Quebec (Canada); Carleton Univ., Ottawa, Ontario (Canada); Durham Univ. (UK); Stanford Linear Accelerator Center, Calif. (USA)
OSTI ID:
5259285
Report Number(s):
SLAC-PUB-1886; CONF-760719-40
Country of Publication:
United States
Language:
English

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Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ANGULAR MOMENTUM
BARYONS
BOSONS
CROSS SECTIONS
EFFECTIVE RANGE THEORY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
ISOSPIN
KAON MINUS-PROTON INTERACTIONS
KAON PLUS-PROTON INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
KAONS
KAONS MINUS
KAONS PLUS
MASS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-MESON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NEUTRONS
NUCLEONS
P WAVES
PARITY
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PION-KAON INTERACTIONS
PRODUCTION MECHANISMS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
S WAVES
SCATTERING AMPLITUDES
SPIN
STRANGE PARTICLES
TIME DEPENDENCE
TOTAL CROSS SECTIONS