A possible solution to the B -> pi pi puzzle using the principle of maximum conformality
文献类型：期刊论文
| 作者 | Qiao CF(乔从丰); Zhu RL(朱瑞林); Qiao, CF; Zhu, RL; Wu, XG; Brodsky, SJ |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2015 |
| 卷号 | 748页码:422-427 |
| 英文摘要 | The measured B-d -> pi(0)pi(0) branching fraction deviates significantly from conventional QCD predictions, a puzzle which has persisted for more than 10 years. This may be a hint of new physics beyond the Standard Model; however, as we shall show in this paper, the pQCD prediction is highly sensitive to the choice of the renormalization scales which enter the decay amplitude. In the present paper, we show that the renormalization scale uncertainties for B -> pi pi can be greatly reduced by applying the Principle of Maximum Conformality (PMC), and more precise predictions for CP-averaged branching ratios B(B -> pi pi) can be achieved. Combining the errors in quadrature, we obtain B(B-d -> pi(0)pi(0))vertical bar(PMC) = (0.98(-0.31)(+0.44)) x 10(-6) by using the light-front holographic low-energy model for the running coupling. All of the CP-averaged B -> pi pi branching fractions predicted by the PMC are consistent with the Particle Data Group average values and the recent Belle data. Thus, the PMC provides a possible solution for the B-d -> pi(0)pi(0) puzzle. (C) 2015 The Authors. Published by Elsevier B.V. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
| 收录类别 | SCI |
| WOS记录号 | WOS:000359146200063 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228650]  |
| 专题 | 高能物理研究所_理论物理室 |
| 推荐引用方式 GB/T 7714 | Qiao CF,Zhu RL,Qiao, CF,et al. A possible solution to the B -> pi pi puzzle using the principle of maximum conformality[J]. PHYSICS LETTERS B,2015,748:422-427. |
| APA | 乔从丰,朱瑞林,Qiao, CF,Zhu, RL,Wu, XG,&Brodsky, SJ.(2015).A possible solution to the B -> pi pi puzzle using the principle of maximum conformality.PHYSICS LETTERS B,748,422-427. |
| MLA | 乔从丰,et al."A possible solution to the B -> pi pi puzzle using the principle of maximum conformality".PHYSICS LETTERS B 748(2015):422-427. |
入库方式： OAI收割
来源：高能物理研究所
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