Extracting the rho-omega mixing amplitude from the pion form-factor

被引：41

作者：

OConnell, HB

Thomas, AW

Williams, AG

机构：

[1] UNIV ADELAIDE,DEPT PHYS & MATH PHYS,ADELAIDE,SA 5000,AUSTRALIA

[2] UNIV ADELAIDE,SPECIAL RES CTR SUBATOM STRUCT MATTER,ADELAIDE,SA 5000,AUSTRALIA

来源：

NUCLEAR PHYSICS A | 1997年 / 623卷 / 3-4期

关键词：

vector mesons; pion form factor; meson mixing; isospin violation;

D O I：

10.1016/S0375-9474(97)88425-4

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We re-examine and extend a recent analysis which showed that the rho-omega mixing amplitude cannot be unambiguously extracted from the pion electromagnetic form-factor in a model independent way. In particular, we focus on the argument that the extraction is sensitive to the presence of any intrinsic omega(1) --> pi pi coupling. Our extended analysis confirms the original conclusion, with only minor, quantitative differences. The extracted mixing amplitude is shown to be sensitive to both the intrinsic coupling omega(1) --> pi pi and to the value assumed for the mass of the rho(0)-meson. (C) 1997 Elsevier Science B.V.

引用

页码：559 / 569

页数：11

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