Summary
Effects of the radial wave function are studied for the nonstrange baryons in the symmetric quark model. Rotational energy levels are calculated and are found to be in agreement with the energy levels in the observed baryonic mass spectra. Relativistic perturbative effects which vanish in the large-quark-mass limit are also calculated. The lower bound on the quark mass is found to be approximately 1.5 GeV.
Riassunto
Si studiano gli effetti della funzione d'onda radiale per barioni non strani nel modello. a quark simmetrico. Si calcolano i livelli d'energia rotazionali e si trova che essi concordano con i livelli d'energia negli spettri delle masse barioniche osservati. Si calcolano anche effetti perturbative relativistici che tendono a zero nel limite della grande massa dei quark. Si trova che il limite inferiore della massa dei quark è circa 1.5 GeV.
Резюме
В симметричной кварковой модели исследуются эффекты радиальной волновой функции для нестранных барионов. Вычисляются ротационные уровни энергии. Вычисленные уровни энергии хогошо согласуются с уровнями энергии в наблюденных спектрах барионных масс. Также оцениваются релятивистские пертурбационные эффекты, которые исчезают в пределе большой массы кварка. Найдена нижняя граница для мварка, которая приблизительно составляет 1.5 ГэВ.
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References
M. Gell-Mann:Phys. Lett.,8, 214 (1964);G. Zweig: CERN Report No. TH 401 and 412, unpublished (1964).
O. W. Greenberg:Phys. Rev. Lett.,13, 598 (1964). For review articles, seeR. H. Dalitz: inProceedings of the International Conference on Symmetries and Quark Models, Wayne State University, Detroit, Mich., June 1969;O. W. Greenberg: inProceedings of the Lund International Conference on Elementary Particles, Lund, June 1969;S. Meshkov:Review of hadron spectroscopy, invited talk presented at theInternational Conference on Duality and Symmetry in Hadron Physics, Tel-Aviv, April 1971.
G. F. Chew:Phys. Rev. Lett.,19, 1492 (1967);Y. S. Kim andK. V. Vasavada:Phys. Rev. D,5, 1002 (1972).
P. A. M. Dirac:Rev. Mod. Phys.,21, 392 (1949).
L. Susskind:Phys. Rev. Lett.,23, 545 (1969).
C. H. L. Smith:Ann. of Phys.,53, 521 (1969);M. K. Sundarassen andP. J. S. Watson:Ann. of Phys.,59, 375 (1970);M. Böhm, H. Joos andM. Krammer:Nuovo Cimento,7 A, 21 (1972).
Y. S. Kim andR. Zaoui:Phys. Rev. D,4, 1964 (1971);T. De andY. S. Kim: University of Maryland Technical Report No. 72-111 (1972).
Y. S. Kim andM. E. Noz:Nuovo Cimento,11 A, 513 (1972).
T. Abdullah andF. E. Close:Phys. Rev. D,5, 2332 (1972); and the references contained therein.
R. P. Feynman, M. Kislinger andF. Ravndal:Phys. Rev. D,3, 2706 (1971).
G. N. Fleming:Phys. Rev.,137, B 188 (1965); see alsoH. C. Corben:Classical and Quantum Theories of Spinning Particles (San Francisco, 1968).
T. D. Newton andE. P. Wigner:Rev. Mod. Phys.,21, 400 (1949).
A. Neveu andJ. H. Schwarz:Nucl. Phys.,31 B, 86 (1971).
N. W. Bazley andD. W. Fox:Phys. Rev.,124, 483 (1971);S. I. Chan, D. Stelman andL. E. Thompson:Journ. Chem. Phys.,41, 2828 (1964). We thank Dr.A. Dragt for bringing these references to our attention.
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Supported in part by the National Science Foundation under Grant No. NSF GP 8748.
From a dissertation to be submitted to the Graduate School, University of Maryland, byT. De in partial fulfillment of the requirement for the Ph. D. degree in Physics.
Traduzione a cura della Redazione.
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De, T., Kim, Y.S. & Noz, M.E. Radial effects in the symmetric quark model. Nuov Cim A 13, 1089–1101 (1973). https://doi.org/10.1007/BF02804168
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DOI: https://doi.org/10.1007/BF02804168