Prospects for the measurement of the unitarity triangle angle γ from B0→DK+π- decays

被引：28

作者：

Gershon, Tim ^{[1
]}

Williams, Mike ^{[2
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[2] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

来源：

PHYSICAL REVIEW D | 2009年 / 80卷 / 09期

基金：

英国科学技术设施理事会;

关键词：

CP-VIOLATION;

D O I：

10.1103/PhysRevD.80.092002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The potential for a precise measurement of the unitarity triangle angle gamma in future experiments from the decay B-0 -> DK*0 is well known. It has recently been suggested that the sensitivity can be significantly enhanced by analyzing the B-0 -> DK+pi(-) Dalitz plot to extract amplitudes relative to those of the flavor-specific decay B-0 -> D2*-K+. An extension to this method which includes the case where the neutral D meson is reconstructed in suppressed final states is presented. The sensitivity to gamma is estimated using this method and compared to that obtained using the B-0 -> DK*0 decay alone. Experimental effects, such as background contamination, are also considered. This approach appears to be a highly attractive addition to the family of methods that can be used to determine gamma.

引用

页数：12

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