Delta -> N gamma* Coulomb quadrupole amplitude in PQCD
文献类型：期刊论文
| 作者 | Idilbi, A; Ji, XD; Ma, JP ; Idilbi, A , Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2004 |
| 卷号 | 69期号:1页码:- |
| 关键词 | Transition Form-factors Single Pion Photoproduction Exclusive Processes Quark Model Quantum Chromodynamics Exchange Currents Momentum-transfer Perturbative Qcd Nucleon Delta(1232) |
| ISSN号 | 0556-2821 |
| 英文摘要 | We present a leading-order PQCD factorization formula for the helicity-flip Delta-->Ngamma(*) matrix element G(0) (Coulomb quadrupole amplitude C2), taking into account the transverse momenta of the quarks and the contribution from the gluons. In the large Q(2) limit, its scaling behavior acquires a double-logarithmic correction log(2)(Q(2)/Lambda(2)) compared with the standard scaling analysis, due to the contribution from the orbital motion of the small-x partons. Based on this and on the latest JLab experimental results of the C2-M1 ratio R-SM at Q(2)=3-4 GeV2, we make a phenomenological prediction for the latter at higher values of Q(2). |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000188785800027 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/14151]  |
| 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 | Idilbi, A , Univ Maryland, Dept Phys, College Pk, MD 20742 USA. |
| 推荐引用方式 GB/T 7714 | Idilbi, A,Ji, XD,Ma, JP,et al. Delta -> N gamma* Coulomb quadrupole amplitude in PQCD[J]. PHYSICAL REVIEW D,2004,69(1):-. |
| APA | Idilbi, A,Ji, XD,Ma, JP,&Idilbi, A , Univ Maryland, Dept Phys, College Pk, MD 20742 USA..(2004).Delta -> N gamma* Coulomb quadrupole amplitude in PQCD.PHYSICAL REVIEW D,69(1),-. |
| MLA | Idilbi, A,et al."Delta -> N gamma* Coulomb quadrupole amplitude in PQCD".PHYSICAL REVIEW D 69.1(2004):-. |
入库方式： OAI收割
来源：理论物理研究所
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