论文标题

添加频道镜信息信息,以减少沙丘中系统不确定性

Adding Stroboscopic Muon Information For Reduction of Systematic Uncertainties in DUNE

论文作者

Frisch, Henry J.

论文摘要

MUON与中微子的潜伏期/能量相关性与中微子一样,因此在频道镜分析测量其动量光谱中的每个时板中都可以减少由于通量引起的系统不确定性。但是,对于Muons来说,存在独特的问题:1)在标准中微子数据摄取的MUON测量过程中,向前方向必须在强大的高频率高辐射环境中; 2)由于吸收室中必须检测到吸收室中的强大强体通量,因此必须在吸收厚后检测到MUON,并在最低中微子感兴趣的最小中微子动量的势头下施加范围截止; 3)与中微子不同的MUON速度不同于$ c $,因此检测到的muon速度将需要对MUON飞行路径进行校正,需要测量MUON动量; 4)多个散射对于低摩肌muon是显着的,因此“良好的几何形状”对于精确的muon通量测量至关重要。 5)PSEC时正时的发展使感兴趣的动量区域中的MUON MOMMA可以通过飞行时间在短距离内通过几点分辨率的光电遗传学来精确测量。在这里,我们提倡在LBNF计划的早期进行一项广泛精确的低强度MUON动量测量程序,然后再吸收大厅变得太热。在该实验中采用的低摩肌MUON光谱将通过当前计划的MUON监测器与高强度中微子数据进行交叉范围,这些MUON显示器可以在低强度和高强度的几何形状中运行。 尽管超出了与MUON相关的独特问题的范围,但该注释还包括一项长基线振荡分析策略的提案,该策略利用了中微子和MUON的频镜信息,以减少对远处和近检测器中中微子磁中微子的系统不确定性的系统不确定性。

Muons have a similar latency/energy correlation from pion decay as do the neutrinos, and hence in each time-slice in a stroboscopic analysis measurements of their momentum spectra can reduce systematic uncertainties due to flux. There are, however, unique issues for muons: 1) during standard neutrino data-taking muon measurements in the forward direction must be in formidable high-flux high-radiation environments; 2) because of the very high incident hadron flux in the Absorber Hall, muons must be detected after a thick absorber, imposing a range cutoff at a momentum much above the minimum neutrino momentum of interest; 3) the muon velocity, unlike that of neutrinos, differs from $c$, and so the muon detected time will require correction for the muon flight path, requiring measurement of the muon momentum; 4) multiple scattering is significant for low-momentum muons, and so a `good geometry' is essential for precision muon flux measurements; and 5) developments in psec timing allow muon momenta in the momentum region of interest to be measured precisely by time-of-flight over short distances with photodetectors of a few-psec resolution. Here we advocate that a program of extensive precise low-intensity muon momentum spectrum measurements be carried out early in the LBNF program before the Absorber Hall becomes too hot. The low-momentum muon spectra taken in this experiment would be cross-normalized to the high-intensity neutrino data through the currently planned muon monitors which can operate in both the low and high intensity geometries. While beyond the scope of uniquely muon-related issues, the note includes a proposal for an long-base-line oscillation analysis strategy that exploits stroboscopic information for both neutrinos and muons to reduce systematic uncertainties on the neutrino fluxes and event selection in Far and Near detectors.

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