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arXiv 0710.4881nucl-thastro-ph.SRphysics.ins-det
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用相对论准粒子无规相近似计算带电中微子核反应

Inclusive charged-current neutrino-nucleus reactions calculated with the relativistic quasiparticle random phase approximation

N. Paar, D. Vretenar, T. Marketin, P. Ring

摘要:

在相对论平均场理论框架下计算了中微子-核的包容截面。弱轻子-强子相互作用用标准流-流形式表示,核的基态用相对论Hartree-Bogoliubov模型描述,核的激发态跃迁在相对论准粒子无规相近似下计算.对$^{12}$ C、$^{16}$ O、$^{56}$ Fe和$^{208}$ Pb上的带电中微子反应进行了说明性的实验计算,并将计算结果与以前的研究和现有数据进行了比较.使用实验中微子通量,平均截面的中微子探测器的感兴趣的核进行评估。我们分析了总的中微子-核截面,以及不同的多极激发的贡献作为中微子能量的函数的演化。分析了超新星中微子与$^{16}$ O和$^{208}$ Pb靶核反应的截面随温度和化学势的变化。

英文摘要:

Inclusive neutrino-nucleus cross sections are calculated using a consistent relativistic mean-field theoretical framework. The weak lepton-hadron interaction is expressed in the standard current-current form, the nuclear ground state is described with the relativistic Hartree-Bogoliubov model, and the relevant transitions to excited nuclear states are calculated in the relativistic quasiparticle random phase approximation. Illustrative test calculations are performed for charged-current neutrino reactions on $^{12}$C, $^{16}$O, $^{56}$Fe, and $^{208}$Pb, and results compared with previous studies and available data. Using the experimental neutrino fluxes, the averaged cross sections are evaluated for nuclei of interest for neutrino detectors. We analyze the total neutrino-nucleus cross sections, and the evolution of the contribution of the different multipole excitations as a function of neutrino energy. The cross sections for reactions of supernova neutrinos on $^{16}$O and $^{208}$Pb target nuclei are analyzed as functions of the temperature and chemical potential.

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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