Atomic mass dependence of hadron production in semi-inclusive deep inelastic lepton-nucleus scattering

被引：0
|
作者：
宋丽华 [1 ,2 ]
刘娜 [1 ,3 ]
段春贵 [1 ,4 ]
机构：
[1] Department of Physics, Hebei Normal University
[2] College of Science, Hebei United University
[3] College of Mathematics and Physics, Shijiazhuang University of Economics
[4] Hebei Advanced Thin Films Laboratory
来源：
Chinese Physics C | 2013年 / 08期
基金：
中国国家自然科学基金;
关键词：
atomic mass dependence; quark energy loss; hadron production; deep inelastic scattering;
D O I：
暂无
中图分类号：
O572.2 [粒子物理学];
学科分类号：
070202 ;
摘要：
Hadron production in lepton-nucleus deep inelastic scattering is studied in a quark energy loss model. The leading-order computations for hadron multiplicity ratios are presented and compared with the selected HERMES pions production data with the quark hadronization occurring outside the nucleus by means of the hadron formation time. It is found that the obtained energy loss per unit length is 0.440±0.013 GeV/fm for an outgoing quark by the global fit. It is confirmed that the atomic mass number dependence of hadron attenuation is theoretically and experimentally in good agreement with the A 2/3 power law for quark hadronization occurring outside the nucleus.
引用
收藏
页码：35 / 39
页数：5
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