Fragmentation functions and parton distribution functions for the pion with the nonlocal interactions

被引:12
|
作者
Nam, Seung-il [1 ]
Kao, Chung-Wen [2 ]
机构
[1] Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea
[2] Chung Yuan Christian Univ, Dept Phys, Chungli 32023, Taiwan
来源
PHYSICAL REVIEW D | 2012年 / 85卷 / 03期
关键词
INSTANTONS; E(+)E(-); NUCLEON; QUARKS; KAONS; MODEL;
D O I
10.1103/PhysRevD.85.034023
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We study the unpolarized fragmentation functions and the parton distribution functions of the pion employing the nonlocal chiral quark model. This model manifests the nonlocal interactions between the quarks and pseudoscalar mesons in the light-cone coordinate. We find that the nonlocal interactions result in substantial differences in comparison to the result of typical models with only local couplings. We also perform the high Q(2)-evolution for our results which is calculated at a relatively low-renormalization scale Q(2) approximate to 0.36 GeV2 and compare them with the experimental data. It has shown that our results after evolution are in qualitatively good agreement with those experimental data.
引用
收藏
页数:11
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