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arXiv 1207.0693nucl-th
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用中子-核相干散射探测中子密度分布

Neutrino-nucleus coherent scattering as a probe of neutron density distributions

Kelly Patton, Jonathan Engel, Gail C. McLaughlin, Nicolas Schunck

摘要:

中子-核相干弹性散射为测量核形状因子的中子部分提供了一种理论上有吸引力的方法。利用形状因子的矩展开,我们表明,中微子停止π介子不仅可以探测到的形状因子(中子半径)的第二时刻,但也四时刻。使用简单的蒙特卡罗技术的氩,锗,氙探测器的3.5吨,1.5吨,和300公斤,分别,我们表明,中子半径可以找到几个百分点的不确定性时,附近的中微子通量$3\times10^{7}$中微子/cm $^{2}$ /s。如果中微子通量的归一化是独立已知的,那么就可以足够精确地确定矩,以区分各种核能泛函的预测。

英文摘要:

Neutrino-nucleus coherent elastic scattering provides a theoretically appealing way to measure the neutron part of nuclear form factors. Using an expansion of form factors into moments, we show that neutrinos from stopped pions can probe not only the second moment of the form factor (the neutron radius) but also the fourth moment. Using simple Monte Carlo techniques for argon, germanium, and xenon detectors of 3.5 tonnes, 1.5 tonnes, and 300 kg, respectively, we show that the neutron radii can be found with an uncertainty of a few percent when near a neutrino flux of $3\times10^{7}$ neutrinos/cm$^{2}$/s. If the normalization of the neutrino flux is known independently, one can determine the moments accurately enough to discriminate among the predictions of various nuclear energy functionals.

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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