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arXiv 0903.0605nucl-th
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三核子力作用下电子与~ 4 He的散射

Electron Scattering off 4He with Three-Nucleon Forces

Sonia Bacca, Nir Barnea, Winfried Leidemann, Giuseppina Orlandini

摘要:

本文给出了~ 4 He(e,e ')非弹性纵向响应函数R_L的从头计算方法。使用了真实的二体力和三体力。利用洛仑兹积分变换严格地处理了四体连续介质动力学。对于300 ~ 500 MeV/c之间的动量转移q,三核子力使准弹性峰高降低了约10%。实验数据得到了很好的描述,但不够精确,无法解决这一问题。由于三核子力的减少在较低的q下显著增加,在q=100 MeV/c时达到约40%。然而,在这样的q值下,数据缺失。

英文摘要:

An ab-initio calculation of the 4He(e,e') inelastic longitudinal response function R_L is presented. Realistic two- and three-body forces are used. The four-body continuum dynamics is treated rigorously with the help of the Lorentz integral transform. The three-nucleon force reduces the quasi-elastic peak height by about 10% for momentum transfers q between 300 and 500 MeV/c. Experimental data are well described, but not sufficiently precise to resolve this effect. The reduction due to the three-nucleon force increases significantly at lower q reaching up to about 40% at q=100 MeV/c. However, at such q values data are missing.

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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