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An application of the double peripheral model to the reaction K+p→K+π+n at 3 GeV/c

Применение двойной периферической модели к реакции K+p→K+π+n при 3 ГэB/c

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Il Nuovo Cimento A (1965-1970)

Summary

An attempt is made to reproduce the experimental differential cross-sections of the reaction K+p→K+π+n assuming the validity of the double peripheral model. Double vector-meson exchange (ρ, ω) has to be included to account for the small slope in dσ/dt where −t is the momentum transfer between the two nucleons. Restrictions on the coupling constants and approximate values of the other parameters are obtained from the calculations. The analysis indicates, however, that mechanisms other than the double peripheral model probably contribute significantly to this process, at least in the energy region considered here.

Riassunto

Si tenta di riprodurre le sezioni d'urto differenziali sperimentali della reazione K+p→K+π+n facendo l'ipotesi che valga il modello doppiamente periferico. Si deve includere il doppio scambio di mesoni vettoriali (σ, ω) per rendere conto della lieve pendenza in dσ/dt dove −t è il momento trasferito tra due nucleoni. Si ottengono dai calcoli limitazioni alle costanti di accoppiamento e valori approssimati degli altri parametri. L'analisi indica tuttavia che meccanismi diversi dal modello doppiamente periferico probabilmente contribuiscono in modo significativo a questo processo, almeno nella regione di energia che si considera in questo articolo.

Резюме

Предпринимается попытка воспроизвести экспериментальные поперечные сечения для реакции K+p→K+π+n, предполагая справедливость двойной периферической модели. Двойной обмен векторным мезоном (ρ, ω) должен быть принят во внимание для малого наклона в dσ/dt, где −t есть передаваемый импульс между нуклонами. Из вычислений получаются константы связи и приближенные величины других параметров. Однако, анализ указывает, уто другие механизмы, отличные от двойной периферической модели, вероятно дают значительный вклад в зтот процесс, по крайней мере, в рассмотренной здесь области энергий.

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Gislén, L. An application of the double peripheral model to the reaction K+p→K+π+n at 3 GeV/c. Nuovo Cimento A (1965-1970) 54, 919–936 (1968). https://doi.org/10.1007/BF02825804

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  • DOI: https://doi.org/10.1007/BF02825804

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