Summary
We have applied anisotropic chromodynamics (ACD) to a calculation of the first approximation of the meson (\(q\bar q\) spectrum. We show that ACD affords a consistent and remarkably successful description of this spectrum in terms of 5 parameters only: 4 quark masses and the « string tension » µ. We can clearly delineate which higher-order effects should act, and how, in order to produce a systematic and accurate account of the parameters of all known mesons including their decay properties.
Riassunto
Siè applicata la cromodinamica anisotropa (ACD) al calcolo della prima approssimazione allo spettro dei mesoni (stati\(q\bar q\)). Si mostra che 1’ACD produce una descizione dello spettro estremamente accurata con un numero di parametri minimo: 4 masse dei quark e una « tensione della corda » μ. Siè pure in grado di delineare quali siano gli ordini di approssimazione e in ehe modo essi potranno, in una fase successiva del calcolo, portare ad un perfetto accordo sperimentale.
Резюме
Мы используем анизотропную хромодинамику для вычисления мезонного спектра в первом приближении. Мы показываем, что анизотропная хромодинамика позволяет согласованно и довольно успешно описать такой спектр в терминах только пяти параметров: четырех масс кварков и «натяжения струны» μ. Мы можем обрисовать, как включить эффекты более высоких порядков и как произвести систематический и точный учет параметров для всех известных мезонов, включая их свойства распада.
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Basdevant, J.L., Colangelo, P. & Preparata, G. The structure of strong interactions in anisotropic chromodynamics. Nuov Cim A 71, 445–476 (1982). https://doi.org/10.1007/BF02770986
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DOI: https://doi.org/10.1007/BF02770986