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| 題 名 | Perturbative Pion Form Factor Re-Examined |
|---|---|
| 作 者 | Tung,David; Li,Hsiang-nan; | 書刊名 | Chinese Journal of Physics |
| 卷 期 | 35:6(Part1) 民86.12 |
| 頁 次 | 頁651-662 |
| 分類號 | 331.3 |
| 關鍵詞 | 微擾理論; |
| 語 文 | 英文(English) |
| 英文摘要 | We recalculate the pion electromagnetic form factor based on the perturbative QCD formalism that includes the Sudakov resummation. We take into account the evolution of the pion wave function in b, which represents the transverse extent of the pion. An infrared enhancement is observed when 1/b approaches AQCD. We propose to freeze the evolution of the wave function at some scale above AQCD, such that perturbative contributions are stablized. Our predictions are consistent with experimental data, and insensitive to the variation of relevant parameters. |
本系統中英文摘要資訊取自各篇刊載內容。