Knowledge Management System of Institute of Theoretical Physics, CAS
| Cao, FG; Huang, T; Cao, FG , Massey Univ, Inst Fundamental Sci, Private Bag 11 222, Palmerston North, New Zealand. | |
| Large corrections to asymptotic F-eta c gamma and F-eta b gamma in the light-cone perturbative QCD | |
| Source Publication | PHYSICAL REVIEW D
 |
| Keyword | Transition Form-factor Infinite-momentum Frame Quantum Electrodynamics Wigner Rotation Wave-function Pion Decays Spin Gamma-gamma-asterisk->pi(0) Constant |
| Abstract | 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]. |
| 1999 | |
| ISSN | 0556-2821 |
| Volume | 59Issue:9Pages:- |
| Subject Area | Physics |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/13160 |
| Collection | 理论物理所科研产出_SCI论文 |
| Corresponding Author | Cao, FG , Massey Univ, Inst Fundamental Sci, Private Bag 11 222, Palmerston North, New Zealand. |
| Recommended Citation GB/T 7714 | Cao, FG,Huang, T,Cao, FG , Massey Univ, Inst Fundamental Sci, Private Bag 11 222, Palmerston North, New Zealand.. 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):-. |
| APA | Cao, FG,Huang, T,&Cao, FG , Massey Univ, Inst Fundamental Sci, Private Bag 11 222, Palmerston North, New Zealand..(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),-. |
| MLA | Cao, FG,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):-. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Large corrections to（173KB） | 开放获取 | License | Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment