Neutral-current background induced by atmospheric neutrinos at large liquid-scintillator detectors. II. Methodology for in situ measurements
文献类型：期刊论文
| 作者 | Cheng, Jie; Li, Yu-Feng; Lu, Hao-Qi; Wen, Liang-Jian |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2021 |
| 卷号 | 103期号:5 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.103.053002 |
| 文献子类 | Article |
| 英文摘要 | Future large liquid-scintillator (LS) detectors are competitive with and complementary to the water-Cherenkov detectors on the searches for diffuse supernova neutrino background and nucleon decay. In a companion paper, we have performed a systematic calculation of the neutral-current (NC) background induced by atmospheric neutrino interactions on C-12 nuclei in LS detectors, which are expected to be crucially important for the experimental searches for the diffuse supernova neutrino background and nucleon decay. In this paper, we perform a systematic study on the measurement of the NC background and evaluate the associated uncertainties. We first exploit the characteristics of the NC background, in particular, the multiplicities of neutrons and pions, and the possible association with unstable residual nuclei. It turns out that the neutron multiplicity distribution is very powerful to discriminate among different models. Then, we develop a maximum-likelihood method to allow an in situ measurement of the NC interactions with a triple-coincidence signature. Finally, a data-driven approach is proposed to evaluate the uncertainty of the NC background in the search for the diffuse supernova neutrino background. We conclude that future large LS experiments like the Jiangmen Underground Neutrino Observatory will be able to make a unique contribution to the worldwide dataset to improve the prediction of atmospheric neutrino NC interactions on C-12. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 电子版国际标准刊号 | 2470-0029 |
| 语种 | 英语 |
| WOS记录号 | WOS:000648528200004 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/297532]  |
| 专题 | 江门中微子实验 |
| 推荐引用方式 GB/T 7714 | Cheng, Jie,Li, Yu-Feng,Lu, Hao-Qi,et al. Neutral-current background induced by atmospheric neutrinos at large liquid-scintillator detectors. II. Methodology for in situ measurements[J]. PHYSICAL REVIEW D,2021,103(5). |
| APA | Cheng, Jie,Li, Yu-Feng,Lu, Hao-Qi,&Wen, Liang-Jian.(2021).Neutral-current background induced by atmospheric neutrinos at large liquid-scintillator detectors. II. Methodology for in situ measurements.PHYSICAL REVIEW D,103(5). |
| MLA | Cheng, Jie,et al."Neutral-current background induced by atmospheric neutrinos at large liquid-scintillator detectors. II. Methodology for in situ measurements".PHYSICAL REVIEW D 103.5(2021). |
入库方式： OAI收割
来源：高能物理研究所
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