Production of the doubly strange H dibaryon

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5164547

Aerts, A T; Dover, C B

There is much current interest in the spectroscopy of multiquark states. Predictions abound for the existence of baryonium (Q/sup 2/ anti Q/sup 2/) and six-quark dibaryon (Q/sup 6/) resonances, for instance. In the strangeness S = -2 sector of Q/sup 6/, the MIT bag model predicts a dibaryon H with quantum numbers J/sup ..pi../ = 0/sup +/, isospin I = 0, and mass M/sub H/ approx. = 2150 MeV approx. = 2M/sub ..lambda../ -80 MeV. The H has quark composition uuddss, so all quarks can occupy the ls state; it is unique in that it possesses no strong decay modes. The fact that the H mass is considerably below the ..lambda lambda.. or XiN thresholds precludes its interpretation as a deuteron-like object bound by conventional long-range meson exchange forces. The H has been searched for in the reaction p + p ..-->.. K/sup +/ + K/sup +/ + H by Carroll et al., with an upper limit of about 100 nb/sr/sup 2/ for two K/sup +/'s at +- 18/sup 0/ in the lab system. Some crude cross section estimates we have made for this process indicate much smaller cross sections than this limit. A more natural way to produce the H, in our view, is via the (K/sup -/, K/sup +/) reaction on a diproton in a nuclear target, i.e. K/sup -/ + (pp) ..-->.. K/sup +/ + H.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5164547
• Report Number(s): BNL-31111; CONF-820635-2; ON: DE82012723
• Country of Publication: United States
• Language: English

Related Subjects

645206* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
H-2050 RESONANCES
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
KAON PLUS-PROTON INTERACTIONS
KAON-KAON INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-MESON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE STRUCTURE
RESONANCE PARTICLES
THEORETICAL DATA