arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1003.0957hep-ph
收藏

核子广义部分子分布的一阶矩

The First Moments of Nucleon Generalized Parton Distributions

P. Wang, A. W. Thomas

摘要:

我们利用重子手征微扰理论外推了广义部分子分布的一阶矩。计算是基于有限范围正则化的单回路水平。晶格数据的描述是令人满意的,外推的物理π介子质量的时刻是一致的与尺寸正则化得到的结果,虽然外推的动量转移到$t=0$不显示形状因子的影响,位于手征微扰理论的领域之外的敏感性。我们讨论了现代实验以及QCD启发模型的结果的意义。

英文摘要:

We extrapolate the first moments of the generalized parton distributions using heavy baryon chiral perturbation theory. The calculation is based on the one loop level with the finite range regularization. The description of the lattice data is satisfactory and the extrapolated moments at physical pion mass are consistent with the results obtained with dimensional regularization, although the extrapolation in the momentum transfer to $t=0$ does show sensitivity to form factor effects which lie outside the realm of chiral perturbation theory. We discuss the significance of the results in the light of modern experiments as well as QCD inspired models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑