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Amplitude analysis of the K/sup 0//sub S/K/sup 0//sub S/ system produced in the reaction. pi. /sup -/p. -->. K/sup 0//sub S/K/sup 0//sub S/n at 23 GeV/c

Journal Article · · Phys. Rev. D; (United States)
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We have carried out an amplitude analysis of the K/sup 0//sub S/K/sup 0//sub S/ system produced in the reaction ..pi../sup -/p..-->..K/sup 0//sub S/K/sup 0//sub S/n at 23 GeV/c, based on about 15 000 events in the low-t region (Vertical Bart-t/sub min/Vertical Bar<0.1 GeV/sup 2/). Below 1.6 GeV/c/sup 2/, our favored solution is very similar to those from previous analyses. For higher masses, we observed the K/sup 0//sub S/K/sup 0//sub S/ decay of the h(2040) meson. In addition, the l = 0 partial wave contains a new state, strongly coupled to K/sup 0//sub S/K/sup 0//sub S/, with parameters M = 1.771/sup +0.077//sub -0.053/ GeV/c/sup 2/ and GAMMA = 0.200/sup +0.156//sub -0.009/ GeV/c/sup 2/. Since this state is most probably I = 0, we call it the S('(1770). We find an f'/f production ratio of 0.23/sup +0.14//sub -0.13/, and branching ratios for f-meson and h(2040)-meson decays into KK-bar of (3.1/sup +0.7//sub -1.7/)% and (0.67/sup +0.41//sub -0.15/)%, respectively. We find, in a detailed comparison of our results with those from other experiments, that our solution is compatible with all known features of both charged and neutral KK-bar systems.
Research Organization:
Brookhaven National Laboratory, Upton, New York 11973
OSTI ID:
5433714
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 25:7; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645104* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BOSONS
BRANCHING RATIO
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 10-100
GLUONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
KAONS
KAONS NEUTRAL
KAONS NEUTRAL SHORT-LIVED
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NEUTRONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
STRANGE PARTICLES