Is there still a B→πK puzzle?

被引：40

作者：

Baek, Seungwon ^{[1
]}

London, David

机构：

[1] Yonsei Univ, Inst Appl Phys, Seoul 120749, South Korea

[2] Korea Univ, Dept Phys, Seoul 136701, South Korea

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

来源：

PHYSICS LETTERS B | 2007年 / 653卷 / 2-4期

关键词：

D O I：

10.1016/j.physletb.2007.08.001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We perform a fit to the 2006 B -> pi K data and show that, when one includes (reasonable) theoretical input, there is a disagreement with the Standard Model. That is, the B -> pi K puzzle is still present. In fact, it has gotten worse than in earlier years. Assuming that one new-physics (NP) operator dominates, we show that a good fit is obtained only when one type of NP is added (this includes a modification of the electroweak penguin amplitude). The NP amplitude must be sizeable, with a large weak phase. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：249 / 253

页数：5

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