CP Violation in Physics

物理学中的 CP 违反

• 批准号: 09246105
• 负责人: SANDA Ichiro
• 金额: $ 49.6万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas (A)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09246105/
• 关键词: symmetry; CP symmetry; B factory; CP violation; B meson; elementary Particles

B decay amplitudes involve non-perturbative dynamics. Thus a method to deal with non-perturbative dynamics is necessary. We have discovered that Perturbative QCD methods can be applied to two body B decays. This is a very important result. It allows us to extract physics out of two body B decays. The goal of this reserch is to compute all two body decay amplitudes. We have obtained the following results:・ The size of penguin amplitudes. Recent experimental results show that penguin amplitudes are unexpectedly large. For PQCD to be useful, this enhancement of penguin amplitudes must be explained by PQCD. We have discovered that PQCD naturally predicts large penguin amplitudes. This comes from the fact that the integration range of PQCD covers the region aroulnd 1GeV which is much less than M_B and the Wilson coefficient C_6 increases quite rapidly below 2GeV.・ Through our computation using PQCD, we have found that the annihilation diagrams involving penguin operators are large. This was contrary to the assumption made by many resercher in this field.・ We have found that PQCD allows us to compute final state interaction phased.We have computed B → ππ, Kπ, ρπ, ωπ and φK amplitudes. From these amplitudes, we have predicted Cp asymmetries and their theoretical errors.

B衰减放大器涉及非扰动动力学。需要一种处理非扰动动力学的方法。我们发现扰动QCD方法可以应用于两个身体B衰减。这是一个非常重要的结果。它使我们可以从两个身体B衰减中提取物理学。该储备的目的是计算所有两个身体衰减放大器。我们获得了以下结果：・企鹅幅度的大小。最近的实验结果表明，企鹅放大器出乎意料地大。为了使PQCD有用，必须通过PQCD来解释企鹅放大器的这种增强。我们发现PQCD自然可以预测大型企鹅放大器。这是从以下事实：PQCD的集成范围覆盖了远小于M_B的区域，而Wilson系数C_6通过使用PQCD计算的计算来迅速地增加了2GEV。这与许多参与者在该领域中的假设形成鲜明对比。・我们发现PQCD允许我们计算最终状态相互作用分阶段。我们计算了B→ππ，K基π，π，ωπ和φK放大器。从这些放大器中，我们预测了CP不对称及其理论错误。

项目成果

I.Bigi: "On the Sign of CP asymmetry" Physical Review. (発表予定).

I.Bigi：“CP 不对称的标志”物理评论（待提交）。

K.I.Izawa: "R invariant natura unification" Progress of Theoretical Physics. 97. 913-920 (1997)

K.I.Izawa：“R不变自然统一”理论物理学进展。

I.I.Bigi et.al.: "COMMENTS ON THE SIGN OF CP ASYMMETRIES"Published in Phys.Rev. D60. 033001 (1999)

I.I.Bigi 等人：“关于 CP 不对称符号的评论”发表于 Phys.Rev。

H. Oda: "An exact solution of BPS domain wall junction"Physical Letters. B471. 140-148 (1999)

H. Oda：“BPS 域壁连接的精确解”《物理快报》。

S.Mukaigawa: "Finite grand theories and inflation" Int.Mod.Phys.A13. 2739-2746 (1998)

S.Mukaikawa：“有限宏大理论和暴胀”Int.Mod.Phys.A13。