Speaker
Prof.
Kamal SETH
(Northwestern University)
Description
The results of the first measurements of the electromagnetic form factors of hyperons, Λ0, Σ0, Σ+, Ξ0, Ξ−, and Ω− for the large timelike momentum transfer of |Q2| = 14.2 GeV2 are presented by analyzing data taken with the CLEO detector for 805 pb−1 of e+e− annihilations at ψ(3770), √s = 3.77 GeV, and 586 pb-1 at √s = 4.17 GeV at the CESR collider. Updated results for inclusive production of hyperons, B or B, at ψ(2S ), √s = 3.69 GeV, are also presented. In both inclusive production and in BB pair production it is found that although both Λ0 and Σ0 have the same |u, d, s⟩ quark content, Λ0 production is significantly larger than that of Σ0. It is proposed that this arises because of the different “diquark correlations” between Λ0 and Σ0, which Wilczek and colleagues have labeled as “good” and “bad” diquarks.
Primary author
Prof.
Kamal SETH
(Northwestern University)
Co-author
Sean Dobbs
(Northwestern University)
