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arXiv 1209.0636nucl-exhep-phnucl-th
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解开EMC效应

Disentangling the EMC Effect

E. Piasetzky, O. Hen, L. B. Weinstein

摘要:

束缚核子的深度非弹性散射截面不同于自由核子的深度非弹性散射截面,这种现象在30年前首次被发现,被称为EMC效应,至今仍未完全理解。最近对世界数据的分析表明,EMC效应的强度与原子核中两核子短程关联对(2N-SRC)的相对数量呈线性相关。后者是一对核子,其波函数重叠,使它们具有大的相对动量和低的质心动量,其中高和低是相对于原子核的费米动量。观测到的相关性表明,EMC效应与2N-SRC对一样,与核中的高动量核子有关。本文回顾了以往的EMC-SRC相关性的研究,并研究其鲁棒性。它还提出了一个计划的实验,旨在研究这种EMC-SRC相关性的起源。

英文摘要:

The deep inelastic scattering cross section for scattering from bound nucleons differs from that of free nucleons.This phenomena, first discovered 30 years ago, is known as the EMC effect and is still not fully understood. Recent analysis of world data showed that the strength of the EMC effect is linearly correlated with the relative amount of Two-Nucleon Short Range Correlated pairs (2N-SRC) in nuclei. The latter are pairs of nucleons whose wave functions overlap, giving them large relative momentum and low center of mass momentum, where high and low is relative to the Fermi momentum of the nucleus. The observed correlation indicates that the EMC effect, like 2N-SRC pairs, is related to high momentum nucleons in the nucleus. This paper reviews previous studies of the EMC-SRC correlation and studies its robustness. It also presents a planned experiment aimed at studying the origin of this EMC-SRC correlation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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