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Comparison of the K+-p elastic scattering with the optical models

Сравнение упругого рассеяния K+-p с оптическими моделями

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Il Nuovo Cimento A (1965-1970)

Summary

The comparison of the K+-p elastic scattering with the optical models is carried out by using a phenomenological radius of the target nucleon which is calculated from the elastic and total cross-sections at the same momentum. Good agreement is obtained using phase shifts which have in the elastic differential cross-section a term analogous to a propagator factor. From the calculated variation of the target radius with incident momentum these models predict a small shrinking of the K+-p diffraction peak but a greater width for the K+p peak than Kp peak.

Riassunto

Si fa il confronto dello scattering elastico K+-p con i modelli ottici ricorrendo a un raggio fenomenologico del neutrone bersaglio calcolato in base alle sezioni d'urto elastica e totale allo stesso impulso. Si ottiene un buon accordo mediante spostamenti di fase che hanno nell'espressione della sezione d'urto differenziale elastica un termine analogo ad un fattore di propagazione. In base alla variazione calcolata del raggio del bersaglio coll'impulso incidente questi modelli predicono una piccola contrazione del picco di diffrazione K+-p ma un'ampiezza del picco K+p maggiore di quella del picco Kp.

Резюме

Производится сравнение упругого рассеяния K+-p с оптическими моделями, используя феноменологический радиус для нуклона мишени, который вячисляется из упругого и полного сечении при том же импульсе. Получено хорошее согласие, используя сдвиг фаз, которые имеют в упругом дифференциальном поперечном сечении член, аналогичный фактору пропагатора. С помощью рассчитанного изменения радиуса мишени, с изменением падаущего импульса, эти моделип редсказывают небольшое сужение диффракционного пика K+-p, причём, ширина больше для K+p пика, чем для Kp пика.

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References

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Traduzione a cura della Redazione.

Рередебено ребакцуей.

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Fridman, A., Michalon, A. Comparison of the K+-p elastic scattering with the optical models. Nuovo Cimento A (1965-1970) 48, 344–353 (1967). https://doi.org/10.1007/BF02818010

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  • DOI: https://doi.org/10.1007/BF02818010

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