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arXiv 0801.2066nucl-th
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少核子系统的高能破裂

High Energy Break-Up of Few-Nucleon Systems

Misak M. Sargsian

摘要:

本文讨论了少核子系统高能两体分裂反应理论的最新进展。这些反应的特点是,硬二体准弹性子过程可以清楚地从伴随的软子过程。我们详细讨论了硬再散射模型(HRM),其中硬光致衰变的发展分为两个阶段。首先,光子击倒一个高能夸克,该夸克随后与另一个核子的夸克重新散射。后者提供了一种由两个出射核子共享光子初始高动量的机制。在HRM中,我们讨论了涉及$^2D$和$^3He$靶点的硬断裂反应。HRM的另一个发展是预测了硬二体反应的新螺旋度选择机制,这在最近的JLab实验中得到了证实。

英文摘要:

We discus recent developments in theory of high energy two-body break-up reactions of few-nucleon systems. The characteristics of these reactions are such that the hard two-body quasielastic subprocess can be clearly separated from the accompanying soft subprocesses. We discuss in details the hard rescattering model (HRM) in which hard photodisintegration develops in two stages. At first, photon knocks-out an energetic quark which rescatters subsequently with a quark of the other nucleon. The latter provides a mechanism of sharing the initial high momentum of the photon by the outgoing two nucleons. Within HRM we discuss hard break-up reactions involving $^2D$ and $^3He$ targets. Another development of HRM is the prediction of new helicity selection mechanism for hard two-body reactions, which was apparently confirmed in the recent JLab experiment.

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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