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arXiv 1807.09265nucl-exhep-ex
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用更新的核数据库研究反中微子谱异常

Investigation of antineutrino spectral anomaly with updated nuclear database

Xubo Ma, Le Yang, Liang Zhan, Fengpeng An, Jun Cao

备注：
5 pages, 7 figures. arXiv admin note: text overlap with arXiv:1805.09973
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摘要：

最近，三个成功的反中微子实验（大亚湾，双中微子和RENO）测量中微子混合角θ_13，然而，显着的差异，无论是在绝对流量和光谱形状。本文利用更新的核数据库计算了反中微子能谱，发现四种同位素的反中微子能谱对ENDF/B-VII.1裂变产额的5--7MeV碰撞都有贡献。利用更新后的库可以很好地解释该隆起，并给出了更重要的同位素对该隆起的贡献。最后讨论了四种同位素之间的裂变产额相关系数，发现相关系数都很大。

英文摘要：

Recently, three successful antineutrino experiments (Daya Bay, Double Chooz, and RENO) measured the neutrino mixing angle theta_13; however, significant discrepancies were found, both in the absolute flux and spectral shape. In this study, the antineutrino spectra were calculated by using the updated nuclear database, and we found that the four isotopes antineutrino spectrum have all contribution to the 5--7 MeV bump with ENDF/B-VII.1 fission yield. The bump can be explained well using the updated library and more important isotopes contribution to the bump were also given. In the last, the fission yield correlation coefficient between the four isotopes were discussed, and found that the correlation coefficients are very large.

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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