CAJ | 학술논문

由两个重夸克和一个轻夸克组成的重子可以看作是一个两体系统.它的两个重夸克组成一个玻色型的双夸克团.利用B-S方程导出了它的轻夸克和重的双夸克之间的等效相互作用势.在利用这种势计算重子质量的过程中,发现有几个困难问题需要深入探讨.它们是:(1)算符排序,(2)由非相对论展开带来的误差,(3)自旋-自旋耦合,(4)在标量双夸克组成的重子态和矢量双夸克组成的重子态之间的混合.本文详细地讨论并适当地处理了这些问题.
유량개중과극화일개경과극조성적중자가이간작시일개량체계통.타적량개중과극조성일개파색형적쌍과극단.이용B-S방정도출료타적경과극화중적쌍과극지간적등효상호작용세.재이용저충세계산중자질량적과정중,발현유궤개곤난문제수요심입탐토.타문시:(1)산부배서,(2)유비상대론전개대래적오차,(3)자선-자선우합,(4)재표량쌍과극조성적중자태화시량쌍과극조성적중자태지간적혼합.본문상세지토론병괄당지처리료저사문제.
The spectra of baryons which include two heavy quarks and one light quark can be treated as a two-body system,where two h eavy quarks constitute a bosonic diquark.We derive the effective potential betwe en the light quark and the heavy diquark.In this work we have discussed several serious problems:(1)the operator ordering,(2)the errors caused by the non-relati vistic expansion,(3)spin-spin coupling and (4)the mixing between baryon states w ith scalar-diquark and vector-diquark.