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arXiv 0901.2507nucl-th
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核物质的弱响应

Weak Response of Nuclear Matter

Nicola Farina

摘要:

对中微子与原子核和核物质相互作用的定量理解是研究许多不同问题所必需的。在天体物理环境中,中微子-核子和中微子-核反应速率被用作超新星$æ$爆炸和中子星冷却等现象的模拟输入。在中微子物理领域,中微子-核截面的定量知识对于降低长基线振荡实验的系统不确定度至关重要。重要的是要认识到,虽然中微子在恒星物质中的相互作用通常具有几兆电子伏的能量,但长基线振荡实验所涉及的能量要大得多。例如,K2 K实验在$E_ν =0.5-3$ GeV区域中获取数据。在这篇论文中,我们描述了核多体理论如何提供一个方案,允许一致的处理中微子核相互作用在高,低能量。我们将给出我们对高能区中微子-核反应截面的预测和低能区核物质弱反应的计算结果。

英文摘要:

The quantitative understanding of neutrino interactions with nuclei and nuclear matter is needed to the study of many different problems. In the astrophysics environment, neutrino-nucleon and neutrino-nucleus reaction rates are used as inputs in the simulations of phenomena like supernov$æ$ explosions and neutron star cooling. In the field of neutrino physics, the quantitative knowledge of neutrino-nucleus cross-section is critical to reduce the systematic uncertainty of the long baseline oscillation experiments. It is important to realize that, while neutrinos interacting in stellar matter typically have energies of the order of few MeV, the energies involved in long baseline oscillations experiments are much larger. For example, K2K experiment takes data in the region $E_ν =0.5-3$ GeV. In this thesis, we describe how nuclear many-body theory provide a scheme allowing for a consistent treatment of neutrino-nucleus interactions at both high and low energies. We will show our predictions of the neutrino-nucleus cross section in the high energy regime and the results of our calculations for the nuclear matter weak response in the low energy regime.

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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