A model independent construction of the unitarity triangle

被引:99
作者
Grossman, Y [1 ]
Nir, Y [1 ]
Worah, MP [1 ]
机构
[1] WEIZMANN INST SCI,DEPT PARTICLE PHYS,IL-76100 REHOVOT,ISRAEL
关键词
D O I
10.1016/S0370-2693(97)00675-8
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In a large class of models, the only significant new physics effect on the CP asymmetries in B --> psi K-s and B --> pi pi decays is a new contribution to the B - (B) over bar mixing amplitude. This allows a model independent construction of the CKM Unitarity Triangle (up to hadronic uncertainties). Furthermore, the contributions to the mixing from the Standard Model and from the new physics can be disentangled. A serious obstacle to this analysis is an eightfold discrete ambiguity in solving for the angles of the triangle. Several ways to reduce the ambiguity either by making further measurements, or by making further assumptions about the nature of the new physics are described. (C) 1997 Elsevier Science B.V.
引用
收藏
页码:307 / 313
页数:7
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