Twist-3 contribution to the pion electromagnetic form factor
文献类型：期刊论文
| 作者 | Cao, FG , Massey Univ, Inst Fundamental Sci, Palmerston North, New Zealand.; Dai, YB ; Cao, FG; Huang, CS
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| 刊名 | EUROPEAN PHYSICAL JOURNAL C
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| 出版日期 | 1999 |
| 卷号 | 11期号:3页码:501-506 |
| 关键词 | Perturbative Qcd Sudakov Suppression Exclusive Processes Quantum Chromodynamics Transverse-momentum Asymptotic-behavior Wave-function Applicability Scattering Amplitude |
| ISSN号 | 1434-6044 |
| 英文摘要 | Non-leading contribution to the pion electromagnetic form factor which comes from the pion twist-3 wave function is analyzed in the modified hard scattering approach (MHSA) proposed by Li and Sterman. This contribution is enhanced significantly due to bound state effect (the twist-3 wave function is independent of the fractional momentum carried by the parton and has a large factor similar to m(pi)(2)/m(0) with m(pi) being the pion meson mass and m(0) being the mean u- and d-quark masses). Consequently, although it is suppressed by the factor 1/Q(2), the ttvist-3 contribution is comparable with and even larger than the leading twist (twist-2) contribution at intermediate energy region of Q(2) being 2 similar to 40 GeV2. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000084317100008 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13056]  |
| 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 , Massey Univ, Inst Fundamental Sci, Palmerston North, New Zealand. |
| 推荐引用方式 GB/T 7714 | Cao, FG , Massey Univ, Inst Fundamental Sci, Palmerston North, New Zealand.,Dai, YB,Cao, FG,et al. Twist-3 contribution to the pion electromagnetic form factor[J]. EUROPEAN PHYSICAL JOURNAL C,1999,11(3):501-506. |
| APA | Cao, FG , Massey Univ, Inst Fundamental Sci, Palmerston North, New Zealand.,Dai, YB,Cao, FG,&Huang, CS.(1999).Twist-3 contribution to the pion electromagnetic form factor.EUROPEAN PHYSICAL JOURNAL C,11(3),501-506. |
| MLA | Cao, FG , Massey Univ, Inst Fundamental Sci, Palmerston North, New Zealand.,et al."Twist-3 contribution to the pion electromagnetic form factor".EUROPEAN PHYSICAL JOURNAL C 11.3(1999):501-506. |
入库方式： OAI收割
来源：理论物理研究所
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