Titlebook: Meson and Baryon Spectroscopy; D. B. Lichtenberg Book 1964 Springer-Verlag, Berlin · Goettingen · Heidelberg 1964 Cross section.classifica

下級(jí)

富饒

linear

火車(chē)車(chē)輪

,The ∑ hyperon,The Σ exists in three charge states with masses . and lifetimes ..

choroid

,The Ξ hyperon,The Ξ hyperon is an isospin doublet (Ξ., Ξ.) with hypercharge . = -1. The cross sections for producing the Ξ in πN and . N collisions are much smaller than the corresponding cross sections for producing the Λ or ∑. For this reason, not as much is known about the Ξ as about these other two hyperons.

清唱?jiǎng)?/a>

,The ρ meson,The ρ meson was observed by . et al. (1961) as a correlation in the invariant mass spectrum of two final-state pions from the reactions ..

一窩小鳥(niǎo)

,The ω meson,The ω meson was first observed by . et al. (1961) as a three-pion correlation in antiproton-proton annihilation in the reaction

galley

Boycott

excursion

,The φ meson,The φ meson was observed by . et al. (1962a) in the reactions ..