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arXiv 1704.04582nucl-th
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超新星中微子能量下的中微子-核截面

Neutrino-nucleus cross-sections at supernova neutrino energies

S. Chauhan, M. Sajjad Athar, S. K. Singh

摘要:

研究了超新星中微子/反中微子能区$^{12}C$、$^{16}O$、$^{40}Ar$、$^{56}Fe$和$^{208}Pb$中中微子/反中微子诱导带电和中性电流反应截面.计算在局域密度近似(LDA)中进行,考虑到由于泡利阻塞,费米运动和核介质中的弱跃迁强度的重整化的影响。在带电电流反应中产生的轻子的库仑畸变效应也包括在内。本文给出了最近文献中讨论的几种超新星中微子/反中微子流情况下,带电轻子产生的$σ(E)$截面与能量的关系,以及通量平均截面和事件率的数值结果。我们还给出了相应于这些通量的带电轻子的通量平均角分布和能量分布。

英文摘要:

The inclusive neutrino/antineutrino-induced charged and neutral current reaction cross-sections in $^{12}C$, $^{16}O$, $^{40}Ar$, $^{56}Fe$ and $^{208}Pb$ in the energy region of supernova neutrinos/antineutrinos are studied. The calculations are performed in the local density approximation (LDA) taking into account the effects due to Pauli blocking, Fermi motion and the renormalization of weak transition strengths in the nuclear medium. The effect of Coulomb distortion of the lepton produced in the charged current reactions has also been included. The numerical results for the energy dependence of the cross-section $σ(E)$ as well as the flux averaged cross-section and event rates for the charged lepton production in the case of some supernova neutrino/antineutrino fluxes recently discussed in the literature have been presented. We have also given the flux-averaged angular and energy distributions of the charged leptons corresponding to these fluxes.

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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