论文标题
钙同位素中短距离相关的同胞素结构的新发现
Novel observation of isospin structure of short-range correlations in calcium isotopes
论文作者
论文摘要
短距离相关性(SRC)已被确定为负责核子动量分布的高动量尾部N(k)。核子对的硬,短距离相互作用会产生高动量尾巴,并在所有核中均在N(k)上烙印一个通用特征。三重合实验表明NP对的强大优势,但是这些测量值涉及大的最终状态相互作用。本文提出了杰斐逊实验室实验E08014的结果,该实验测量了来自Ca同位素的包含电子散射横截面。通过比较以SRC为主导的运动区域中从48CA到40CA的包含横截面,我们提供了一种研究SRCS的同胞结构的新方法。
Short Range Correlations (SRCs) have been identified as being responsible for the high momentum tail of the nucleon momentum distribution, n(k). Hard, short-range interactions of nucleon pairs generate the high momentum tail and imprint a universal character on n(k) for all nuclei at large momentum. Triple coincidence experiments have shown a strong dominance of np pairs, but these measurements involve large final state interactions. This paper presents the results from Jefferson Lab experiment E08014 which measured inclusive electron scattering cross-section from Ca isotopes. By comparing the inclusive cross section from 48Ca to 40Ca in a kinematic region dominated by SRCs we provide a new way to study the isospin structure of SRCs.