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Radial excitations in the symmetric quark model

Радиальные воэбуждения в симметричной кварковой модели

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Il Nuovo Cimento A (1971-1996)

Summary

Radial excitation modes are analyzed for nonstrange baryons. It is found that the baryon radial mode exhibits a harmonicoscillatorlike mass spectrum with the energy spacing of 270 MeV. It is shown that a largeSU 6 force is responsible for this narrow spacing. It is shown also that thisSU 6 force is responsible for the exceptionally low mass of the Roper resonance.

Riassunto

Si analizzano i modi di eccitazione radiali per barioni non strani. Si trova che il modo radiale del barione presenta un spettro di massa del tipo dell’oscillatore armonico con intervallo di energia di 270 MeV. Si dimostra che una grande forza diSU 6 è responsabile di questo piccolo intervallo. Si dimostra anche che questa forza diSU 6 è responsabile della massa eccezionalmente bassa della risonanza di Roper.

Реэюме

Проводится аналиэ мод радиальных воэбуждений для нестранных барионов. Получается, что барионная радиальная мода обнаруживает массовый спектр, аналогичный спектру гармонического осциллятора, с интервалом 270 МзВ. Покаэывается, что больщаяSU 6 сила является ответственной эа зтот уэкий интервал. Также отмечается, что зтаSU 6 сила ответственна эа зкспоненциально инэкую массу реэонанса Ропера.

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Authors and Affiliations

  1. Center for Theoretical Physics, Department of Physics and Astronomy, University of Maryland, College Park, Md.

    Y. S. Kim

  2. Department of Physics, Indiana University of Pennsylvania, Indiana, Pa.

    M. E. Noz

Authors
  1. Y. S. Kim
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  2. M. E. Noz
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Supported in part by the National Science Foundation under Grant Number NSF GP 8748.

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Kim, Y.S., Noz, M.E. Radial excitations in the symmetric quark model. Nuov Cim A 11, 513–522 (1972). https://doi.org/10.1007/BF02729460

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  • DOI: https://doi.org/10.1007/BF02729460

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