(d)over-bar - (u)over-bar Flavor Asymmetry in the Proton in Chiral Effective Field Theory
文献类型：期刊论文
| 作者 | Salamu, Y; Ji, CR; Melnitchouk, W; Wang, P; 王平(理) |
| 刊名 | FEW-BODY SYSTEMS
 |
| 出版日期 | 2015 |
| 卷号 | 56期号:6-9页码:355-362 |
| 通讯作者 | Salamu Y |
| 英文摘要 | The (d) over bar - (u) over bar flavor asymmetry in the proton arising from pion loops is computed using chiral effective field theory. The calculation includes both nucleon and Delta intermediate states, and uses both the fully relativistic and heavy baryon frameworks. The x dependence of extracted from the Fermilab E866 Drell-Yan data can be well reproduced in terms of a single transverse momentum cutoff parameter regulating the ultraviolet behavior of the loop integrals. In addition to the distribution at x > 0, corrections to the integrated asymmetry from zero momentum contributions are computed, which arise from pion rainbow and bubble diagrams at x = 0. These have not been accounted for in previous analyses, and can make important contributions to the lowest moment of (d) over bar - (u) over bar. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI ; CA |
| WOS记录号 | WOS:000360435800018 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228638]  |
| 专题 | 高能物理研究所_理论物理室 |
| 推荐引用方式 GB/T 7714 | Salamu, Y,Ji, CR,Melnitchouk, W,et al. (d)over-bar - (u)over-bar Flavor Asymmetry in the Proton in Chiral Effective Field Theory[J]. FEW-BODY SYSTEMS,2015,56(6-9):355-362. |
| APA | Salamu, Y,Ji, CR,Melnitchouk, W,Wang, P,&王平.(2015).(d)over-bar - (u)over-bar Flavor Asymmetry in the Proton in Chiral Effective Field Theory.FEW-BODY SYSTEMS,56(6-9),355-362. |
| MLA | Salamu, Y,et al."(d)over-bar - (u)over-bar Flavor Asymmetry in the Proton in Chiral Effective Field Theory".FEW-BODY SYSTEMS 56.6-9(2015):355-362. |
入库方式： OAI收割
来源：高能物理研究所
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