Summary
Experimental data on vector-meson (ρ0, ω, φ, K*0) production in meson-baryon collision are analyzed from a phenomenological point of view. The reactions considered include both the charge exchange (Y=0) and hypercharge exchange vector-meson production. A simple Regge-pole model with weak exchange degeneracy between a pair of natural parity (ϱ, A2) or (K*, K**), and a pair of unnatural parity, (π, B) or (K, KB). Regge poles is used in conjunction withSU 3 symmetry to relate various observables of vector-meson production reactions. The relations so obtained are compared with the experimental data and reasonable agreement is found both in magnitude and shape.
Riassunto
Si analizzano da un punto di vista fenomenologico i dati sperimentali sulla produzione di mesoni vettoriali (ρ0, ω, φ, K*0) nelle collisioni mesoni-barioni. Si considerano reazioni che comprendono la produzione di mesoni vettoriali sia con scambio della carica (Y=0) che con scambio dell'ipercarica. Per mettere in relazione le varie osservabili delle reazioni di produzione di mesoni vettoriali si usa un semplice modello di Regge con debole degenerazione dello scambio fra un paio di poli di Regge di parità naturale, (ϱ, A2) o (K*, K**), a un paio di poli di Regge di parità non naturale, (π, B) o (K, KB), insieme con la simmetriaSU 3. Si confrontano le relazioni così ottenute con i dati sperimentali e si trova un ragionevole accordo sia come grandezza che come forma.
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Supported in part by the National Science Foundation.
This work was done while the author was a Predoctoral Fellow at the Institute for Theoretical Physics, S.U.N.Y., Stony Brook, N. Y., 11790.
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Sidhu, D.P. SU 3 and exchange degeneracy relations in vector-meson production. Nuov Cim A 22, 357–370 (1974). https://doi.org/10.1007/BF02790624
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DOI: https://doi.org/10.1007/BF02790624