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arXiv 0806.2347hep-ex
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NC反中微子数据中pi0的相干产生

NC Coherent pi0 Production in the MiniBooNE Antineutrino Data

V. T. Nguyen

摘要:

未来$\bar{ν_μ}\to \bar{ν_e}$($ν_μ\to ν_e$)振荡搜索的单一最大背景是中性电流(NC)$π^{0}$生产。MiniBooNE于2006年1月开始收集反中微子数据,拥有世界上最大的反中微子产生的重建$π^{0}$样本。这些中性π介子主要通过$Δ$共振产生,但也可以通过"相干产生“产生。"后一个过程是反中微子从中子或质子上的掠射散射的相干总和,在这个过程中,原子核保持完整,但产生了一个$π^{0}$。这个过程的一个标志是一个高度前瞻性的$π^{0}$。用反中微子而不是中微子研究相干产生是有利的,因为在反中微子运行中相干散射与共振散射的比率增加了。本文讨论了MiniBooNE反中微子数据中NC相干$π^{0}$产生的首次测量。

英文摘要:

The single largest background to future $\bar{ν_μ}\to \bar{ν_e}$ ($ν_μ\to ν_e$) oscillation searches is neutral current (NC) $π^{0}$ production. MiniBooNE, which began taking antineutrino data in January 2006, has the world's largest sample of reconstructed $π^{0}$'s produced by antineutrinos. These neutral pions are primarily produced through the $Δ$ resonance but can also be created through ``coherent production.'' The latter process is the coherent sum of glancing scatters of antineutrinos off a neutron or proton, in which the nucleus is kept intact but a $π^{0}$ is created. A signature of this process is a $π^{0}$ which is highly forward-going. It is advantageous to study coherent production using antineutrinos rather than neutrinos because the ratio of coherent to resonant scattering is enhanced in antineutrino running. The first measurement of NC coherent $π^{0}$ production in the MiniBooNE antineutrino data is discussed here.

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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