A New Research about Pion Parton Distribution Function

A new fit of the pion parton distribution functions is provided. Only valence quark distributions are used at a low evolution scale and are evolved with the modified Dokshitzer- Gribov-Lipatov-Altarelli-Parisi equation which is briefly introduced in this work, and the sea quark and gluon distributio...

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Bibliographic Details
Published inChinese physics letters Vol. 32; no. 5; pp. 31 - 34
Main Author 楼立洋 阮建红
Format Journal Article
LanguageEnglish
Published Chinese Physical Society and IOP Publishing 01.05.2015
Subjects
Distribution functions
Evolution
Gluons
HERA
Mathematical analysis
Partons
Pions
Quantum chromodynamics
Quarks
π介子
中子数据
动力学过程
动量分布
实验数据
胶子分布
部分子分布函数
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/32/5/051201

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Summary:A new fit of the pion parton distribution functions is provided. Only valence quark distributions are used at a low evolution scale and are evolved with the modified Dokshitzer- Gribov-Lipatov-Altarelli-Parisi equation which is briefly introduced in this work, and the sea quark and gluon distributions are only generated by the quantum chromodynamics processes. We find that the patton distributions can explain the pion-nucleon experiments data well, and it can also be compared with the data from the leading neutron data of experiments at HERA. The momentum distributions among the partons are discussed and our results are consistent with some models.
Bibliography:11-1959/O4
LOU Li-Yang,RUAN Jian-Hong（ Department of Physics, East China Normal University, Shanghai 200062）
A new fit of the pion parton distribution functions is provided. Only valence quark distributions are used at a low evolution scale and are evolved with the modified Dokshitzer- Gribov-Lipatov-Altarelli-Parisi equation which is briefly introduced in this work, and the sea quark and gluon distributions are only generated by the quantum chromodynamics processes. We find that the patton distributions can explain the pion-nucleon experiments data well, and it can also be compared with the data from the leading neutron data of experiments at HERA. The momentum distributions among the partons are discussed and our results are consistent with some models.
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/5/051201