Measuring γ in B → Kππ decays

被引：19

作者：

Imbeault, Maxime ^{[1
]}

Rey-Le Lorier, Nicolas ^{[2
]}

London, David ^{[2
]}

机构：

[1] Cegep Baie Comeau, Dept Phys, Baie Comeau, PQ G5C 2B2, Canada

[2] Univ Montreal, Montreal, PQ H3C 3J7, Canada

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

QCD FACTORIZATION; PENGUIN DIAGRAMS; ISOSPIN ANALYSIS;

D O I：

10.1103/PhysRevD.84.034041

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We reexamine the question of measuring the weak phase gamma in B -> K pi pi decays. To this end, we express all B -> K pi pi amplitudes in terms of diagrams. We show that, as in B -> K pi , relations exist between certain tree and electroweak-penguin diagrams. The imposition of these relations allows the extraction of gamma from measurements of the B -> K pi pi observables. We estimate the theoretical error in this method to be O(5%).

引用

页数：11

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