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Causality and analyticity in πN resonant wavesresonant waves

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Fernández-Rañada, Antonio (1967) Causality and analyticity in πN resonant wavesresonant waves. Il Nuovo Cimento A Series 11, 52 (2). pp. 486-505. ISSN 0369-3546

Official URL: http://dx.doi.org/10.1007/BF02818417


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Abstract

The requirements of causality and finite range lead to analytic expressions for theS-matrix in πN resonant waves. The singularities in the complex energy plane are obtained. From them it is easy to calculate the mass and width of the resonances. It is shown that a resonance is a rather complex phenomenon characterized by several mass values which can be very different. For instance, the strange behaviour of theP 11 resonant state is due to this fact.


Item Type:Article
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© Società Italiana di Fisica

Subjects:Sciences > Physics > Electricity
Sciences > Physics > Electronics
ID Code:25442
Deposited On:14 May 2014 08:36
Last Modified:10 Dec 2018 14:58

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