DETERMINATION OF THE CHIRAL-SU(4)XSU(4)-BREAKING PARAMETERS

被引：14

作者：

DAS, KP

DESHPANDE, NG

机构：

[1] Institute of Theoretical Science, University of Oregon, Eugene

来源：

PHYSICAL REVIEW D | 1979年 / 19卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.19.3387

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider broken chiral SU(4) × SU(4) symmetry. From the observed mass spectrum of pseudoscalar charmed mesons, we are able to solve for the symmetry-breaking parameters of the theory. We find that both vacuum and Hamiltonian breaking play an important role as far as charmed states are concerned. Purely from the masses of D and F mesons we deduce the current-algebra mass ratio mcms<5. This differs greatly from values obtained using linear or quadratic mass formulas. Considering η, η′, and ηc mixing we further obtain a good solution with mcms 3.2 and c̄ ū 5.67. © 1979 The American Physical Society.

引用

页码：3387 / 3396

页数：10

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