Determining the strange and antistrange quark distributions of the nucleon

• Published in: Chinese physics C Vol. 34; no. 9; pp. 1414 - 1416
• Main Author: 曹福广 陈洪 A. I. signal
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.09.2010; Institute of Fundamental Sciences,Massey University,Private Bag 11 222,Palmerston North,New Zealand%School of Physical Science and Technology,Southwest University,Chongqing 400715,People's Republic of China
• Subjects: 全球分布; 奇异夸克; 实验数据分析; 微扰模型; 计算过程; 轻夸克; 非微扰; meson cloud model; nucleon; strange and antistrange quark distributions
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/34/9/058

The difference between the strange and antistrange quark distributions,δs（x） = s（x） ˉs（x）,and the combination of light quark sea and strange quark sea,Δ（x） =ˉ d（x） ＋ uˉ（x） s（x） ˉs（x）,are originated from non-perturbative processes and can be calculated using non-perturbative models of the nucleon.We report calculations of δs（x） and Δ（x） using the meson cloud model.Combining our calculations of Δ（x） with relatively well known light antiquark distributions obtained from global analysis of available experimental data,we estimate the total strange sea distributions of the nucleon.