Next-to-Next-to-Leading-Order QCD Corrections to the Hadronic Width of Pseudoscalar Quarkonium
文献类型：期刊论文
| 作者 | Sang, Wen-Long; Feng F(冯锋); Jia Y(贾宇) ; Feng, Feng; Jia, Yu
|
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2017 |
| 卷号 | 119期号:25页码:252001 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.119.252001 |
| 文献子类 | Article |
| 英文摘要 | We compute the next-to-next-to-leading-order QCD corrections to the hadronic decay rates of the pseudoscalar quarkonia, at the lowest order in velocity expansion. The validity of nonrelativistic QCD (NRQCD) factorization for inclusive quarkonium decay process, for the first time, is verified to relative order alpha(2)(s). As a by-product, the renormalization group equation of the leading NRQCD four-fermion operator O-1 (S-1(0)) is also deduced to this perturbative order. By incorporating this new piece of correction together with available relativistic corrections, we find that there exists severe tension between the state-of-the-art NRQCD predictions and the measured eta(c) hadronic width and, in particular, the branching fraction of eta(c) -> gamma gamma NRQCD appears to be capable of accounting for.b hadronic decay to a satisfactory degree, and our most refined prediction is Br (eta(b) -> gamma gamma) (4.8 +/- 0.7) x 10(-5). |
| 电子版国际标准刊号 | 1079-7114 |
| WOS关键词 | B-C-MESON ; LEPTONIC DECAYS ; FEYNMAN ; ANNIHILATION ; AMPLITUDES ; PACKAGE |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000418382400003 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284627]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Sang, Wen-Long,Feng F,Jia Y,et al. Next-to-Next-to-Leading-Order QCD Corrections to the Hadronic Width of Pseudoscalar Quarkonium[J]. PHYSICAL REVIEW LETTERS,2017,119(25):252001. |
| APA | Sang, Wen-Long,冯锋,贾宇,Feng, Feng,&Jia, Yu.(2017).Next-to-Next-to-Leading-Order QCD Corrections to the Hadronic Width of Pseudoscalar Quarkonium.PHYSICAL REVIEW LETTERS,119(25),252001. |
| MLA | Sang, Wen-Long,et al."Next-to-Next-to-Leading-Order QCD Corrections to the Hadronic Width of Pseudoscalar Quarkonium".PHYSICAL REVIEW LETTERS 119.25(2017):252001. |
入库方式： OAI收割
来源：高能物理研究所
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