Hard scattering amplitude for the higher helicity components of the pion form factor
文献类型：期刊论文
| 作者 | Cao, FG; Cao, J; Huang, T; Ma, BQ; Cao, FG , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA. |
| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 1997 |
| 卷号 | 55期号:11页码:7107-7113 |
| 关键词 | Light-cone Representation Perturbative Qcd Analysis Infinite-momentum Frame Exclusive Processes Wave-function Quantum Electrodynamics Sudakov Suppression Wigner Rotation Spin Chromodynamics |
| ISSN号 | 0556-2821 |
| 英文摘要 | For obtaining the spin space wave function of the pion meson in the light-cone formalism from the naive quark model, it is necessary to take into account the Wigner rotation. Consequently there are higher helicity (lambda(1) + lambda(2) = +/- 1) components in the light-cone spin space wavefunction of pion in addition to the usual helicity (lambda(1) + lambda(2) = 0) components. For the pion electromagnetic form factor, we calculate the hard-scattering amplitude for the higher helicity components in light-cone perturbation theory. It is found that the hard-scattering amplitude for the higher helicity components is of order 1/Q(4), which is vanishingly small compared to that of the ordinary helicity components at very high Q(2) but should be considered in the Q(2) region where experimental data are available. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/12473]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Cao, FG , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA. |
| 推荐引用方式 GB/T 7714 | Cao, FG,Cao, J,Huang, T,et al. Hard scattering amplitude for the higher helicity components of the pion form factor[J]. PHYSICAL REVIEW D,1997,55(11):7107-7113. |
| APA | Cao, FG,Cao, J,Huang, T,Ma, BQ,&Cao, FG , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA..(1997).Hard scattering amplitude for the higher helicity components of the pion form factor.PHYSICAL REVIEW D,55(11),7107-7113. |
| MLA | Cao, FG,et al."Hard scattering amplitude for the higher helicity components of the pion form factor".PHYSICAL REVIEW D 55.11(1997):7107-7113. |
入库方式： OAI收割
来源：理论物理研究所
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