CORRECTIONS TO CHIRAL DYNAMICS OF HEAVY HADRONS - SU(3) SYMMETRY-BREAKING

被引：51

作者：

CHENG, HY

CHEUNG, CY

LIN, GL

LIN, YC

YAN, TM

YU, HL

机构：

[1] NATL CENT UNIV,DEPT PHYS,CHUNGLI 32054,TAIWAN

[2] CORNELL UNIV,FLOYD R NEWMAN LAB NUCL STUDIES,ITHACA,NY 14853

[3] SUNY STONY BROOK,INST THEORET PHYS,STONY BROOK,NY 11794

来源：

PHYSICAL REVIEW D | 1994年 / 49卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.49.5857

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In previous publications we have analyzed the strong and electromagnetic decays of heavy mesons and heavy baryons in a formalism which incorporates heavy-quark and chiral symmetries. There are two possible symmetry-breaking effects on the chiral dynamics of heavy hadrons: the finite-mass effects from light quarks and the 1/m(Q) corrections from heavy quarks. In the present paper, chiral-symmetry-breaking effects are studied and applications to various strong and radiative decays of heavy hadrons are illustrated. SU(3) violations induced by chiral loops in the radiative decays of charmed mesons and charmed baryons are compared with those predicted by the constituent quark model. In particular, available data for D* decays favor values of the parameters in chiral perturbation theory which give predictions for D* decays close to the quark model results except for the D(s)*+. Implications are discussed.

引用

页码：5857 / 5881

页数：25

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