Search for a strangeness minus 1 dibaryon below the. Sigma. N threshold

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.46.R1573· OSTI ID:6971863

Johnston, K; Hungerford, E V; Kishimoto, T; Mayes, B W; Tang, L G; Bart, S; Chrien, R E; Lee, L; Pile, P H; Sutter, R; Hicks, K; Fukuda, T; Krauss, R; Gill, D R; Stearns, R; Seyfarth, H ^[1]

---

1. University of Houston, Houston, Texas 77204 (United States) Brookhaven National Laboratory, Upton, New York 11973 (United States) Ohio University, Athens, Ohio 45701 (United States) Osaka University, Osaka (Japan) Texas A M University, College Station, Texas 77843 (United States) TRIUMF, Vancouver, British Columbia (Canada) Vassar College, Poughkeepsie, New York 12601 (United States) Kernforschungsanlage Juelich G.m.b.H., Juelich (Germany)

An experimental search for a {ital p}-wave, strangeness {minus}1 dibaryon ({ital D}{sub {ital s}}) was undertaken at the Brookhaven Alternating Gradient Synchrotron using, for the first time, the {sup 3}He ({ital K}{sup {minus}},{pi}{sup +}){ital D}{sub {ital s}n} reaction at 870 MeV/{ital c}. This dibaryon is predicted to be a spin singlet resonance lying below the {Sigma}{ital N} threshold. In the region between {Lambda}{ital N} and {Sigma}{ital N} thresholds there is significant {Lambda} production through two-step reactions and through virtual {Sigma} production with subsequent conversion to a {Lambda}. At an experimental sensitivity (statistical, at the 2{sigma} confidence level) of about 1.0 {mu}b/sr, we find no evidence for a dibaryon in a region between the {Lambda}-{ital N} and {Sigma}-{ital N} masses.

• OSTI ID: 6971863
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 46:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

662410 -- Properties of Baryons & Baryon Resonances-- (1992-)
663460* -- Meson- & Hyperon-induced Reactions & Scattering-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIBARYONS
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
HADRON REACTIONS
HADRONS
HELIUM 3 TARGET
HYPERONS
INELASTIC SCATTERING
INFORMATION
KAON MINUS REACTIONS
KAON REACTIONS
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
SCATTERING
STRANGE PARTICLES
TARGETS