Production of the six-quark H dibaryon in the (K/sup -/,K/sup +/) reaction

Journal Article · Mon Aug 01 04:00:00 EDT 1983 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.28.450· OSTI ID:5637638

Aerts, A T.M.; Dover, C B

We investigate several ways of producing the stable doubly strange six-quark dibaryon H predicted by the MIT bag model. Various kinematical and dynamical arguments indicate that the (K/sup -/,K/sup +/) double-strangeness-exchange reaction on nuclear targets affords the best chance for observing the H. Cross sections for the prototype reaction /sup 3/He(K/sup -/,K/sup +/n)H are calculated, using empirical data on the reaction K/sup -/p..-->..K/sup +/..xi../sup -/ as input, as well as an oscillator model for the quark-fusion process ..xi../sup -/p..-->..H. The spectrum for the quasielastic process /sup 3/He(K/sup -/,K/sup +/)n..xi../sup -/p is also calculated. For coincidence experiments involving both K/sup +/ and neutron detection at forward angles, the cross section for H production ranges from 10--30 nb/sr/sup 2/ for K/sup -/ beam momenta between 1.4 and 2.2 GeV/c. If the H lies below the ..lambda lambda.. threshold, it can be nicely separated from the K/sup +/ quasielastic background, although ..pi../sup +/'s misidentified as K/sup +/'s can be a problem for certain H masses. If only the K/sup +/ is detected, the separation of the H signal (roughly-equal0.5 ..mu..b/sr) from the quasielastic background can be achieved through a careful measurement of the K/sup +/ momentum spectrum. We assess the effects on our results of the rapid momentum dependence in the K/sup -/p..-->..K/sup +/..xi../sup -/ reaction, as well as short-range correlations in the /sup 3/He wave function.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5637638
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 28:3; ISSN PRVDA
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BAG MODEL
BARYON RESONANCES
BARYONS
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
COMPOSITE MODELS
CROSS SECTIONS
DIBARYON RESONANCES
DISTRIBUTION
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FERMIONS
FUNCTIONS
HADRON REACTIONS
HADRONS
HELIUM 3 TARGET
HYDROGEN 1
HYDROGEN ISOTOPES
ISOTOPES
KAON MINUS REACTIONS
KAON REACTIONS
LIGHT NUCLEI
MATHEMATICAL MODELS
MESON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
QUARK MODEL
RESONANCE PARTICLES
STABLE ISOTOPES
STRANGENESS
TARGETS
WAVE FUNCTIONS