Large corrections to asymptotic F-eta c gamma and F-eta b gamma in the light-cone perturbative QCD
文献类型：期刊论文
| 作者 | Cao FG(曹福广); 黄涛(理) ; Cao, FG; Huang, T
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 1999 |
| 卷号 | 59期号:9页码:93004 |
| 通讯作者 | Massey Univ, Inst Fundamental Sci, Palmerston North, New Zealand ; CCAST, World Lab, Beijing 100080, Peoples R China ; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China ; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China |
| 英文摘要 | The large-Q(2) behavior of eta(c)-gamma and eta(b)-gamma transition form factors F-eta c gamma(Q(2)) and F-eta b gamma(Q(2)) is analyzed in the framework of light-cone perturbative QCD with heavy quark (c and b) mass effects, parton transverse momentum dependence, and higher helicity components in the light-cone wave function are respected. It is pointed out that the quark mass effect brings significant modifications to the asymptotic predictions of the transition form factors in a rather broad energy region, and the modification for F-eta b gamma(Q(2)) is much more severe than that for F-eta c gamma(Q(2)) due to the b quark being heavier than the c quark. The parton transverse momentum and the higher helicity components also play a role in reducing the perturbative predictions. For the transition form factor F-eta c gamma(Q(2)), they bring sizable corrections in the present experimentally accessible energy region (Q(2) less than or equal to 10 GeV2). For the transition form factor F-eta b gamma(Q(2)), the corrections coming from these two factors are negligible since the b-quark mass is much larger than the parton's average transverse momentum. The coming e(+)e(-) collider (CERN LEP2) will provide the opportunity to examine these theoretical predictions. [S0556-2821(99)00909-1]. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 研究领域[WOS] | Astronomy & Astrophysics ; Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000080114600015 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/240850]  |
| 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 | Cao FG,Huang T,Cao, FG,et al. Large corrections to asymptotic F-eta c gamma and F-eta b gamma in the light-cone perturbative QCD[J]. PHYSICAL REVIEW D,1999,59(9):93004. |
| APA | 曹福广,黄涛,Cao, FG,&Huang, T.(1999).Large corrections to asymptotic F-eta c gamma and F-eta b gamma in the light-cone perturbative QCD.PHYSICAL REVIEW D,59(9),93004. |
| MLA | 曹福广,et al."Large corrections to asymptotic F-eta c gamma and F-eta b gamma in the light-cone perturbative QCD".PHYSICAL REVIEW D 59.9(1999):93004. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。