Heavy Hyperon-Antihyperon Production

Journal Article · Wed Oct 26 00:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2130158· OSTI ID:20726659

Oelert, W; Grzonka, D; Kilian, K; Winter, P ^[1]; Jarczyk, L; Moskal, P ^[2]

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1. IKP - Research Centre Juelich, D-52425 Juelich (Germany)
2. Institute of Physics, Jagellonian University, PL-30-059 Cracow (Poland)

Based on the experience from the production of light antihyperon-hyperon ({lambda}-bar{lambda}, {sigma}-bar{sigma}) pairs at LEAR (experiment PS185) it is suggested to continue the investigations towards the heavier antihyperon-hyperon pairs {xi}-bar{xi} and {omega}-bar{omega} in view of:1. the production dynamics of the heavier antihyperon-hyperon out of the p-barp annihilation2. a comparison of the ''(3 s) (3 s-bar)''- quark system {omega}-bar{omega} to the 3 (s-bars) = 3 {phi} meson production, where both systems the {omega}-bar{omega} and the 3 {phi} have similar masses (3.345 and 3.057, respectively) and identical valence quark content.A systematic study of the antihyperon-hyperon production with increasing strangeness content is interesting for the following reasons: The {omega}-bar{omega} production is the creation of two spin 3/2 objects out of the two spin 1/2 p-barp particles. Results of the PS185 experiments prove a clear dominance of the spin triplet s-bars dissociation. In the {omega}({omega}-bar) the three s-quarks (three s-bar-quarks) are aligned to spin 3/2 each. If the three s-bars pairs are now all in spin triplet configurations when created out of the gluonic interaction they should have spin parity quantum number as 3- as long as {omega}{omega}-baris created with relative L = 0 angular momentum.The comparison of the {omega}{omega}-barbaryon pair to the {phi}{phi}{phi} three meson production (where the three s-bars quark pairs might not but can be produced without relative correlation) would provide a unique determination of the intermediate matter state.Measurements of excitation functions and polarization transfers should be used to examine these gluon rich p-barp {yields} {omega}-bar{omega} and p-barp {yields} {phi}{phi}{phi} reaction channels.Such experiments should be performed at the PANDA detector at the FAIR facility of the GSI.

• OSTI ID: 20726659
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 796; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILAMBDA PARTICLES
ANTIPROTONS
CERN LEAR
COMPARATIVE EVALUATIONS
CORRELATIONS
EXCITATION FUNCTIONS
GLUONS
OMEGA BARYONS
PARITY
PARTICLE PRODUCTION
POLARIZATION
PROTON-PROTON INTERACTIONS
REST MASS
S QUARKS
SPIN
STRANGENESS
TRIPLETS
XI BARYONS