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arXiv 1004.0939hep-ph
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高-LAGUNA设计研究中的$γ$ β光束

High-$γ$ Beta Beams within the LAGUNA design study

Christopher Orme

摘要:

在LAGUNA设计研究中,正在评估七个候选地点作为下一代超大型中微子观测站的可行性。这种探测器预计将在未来的欧洲加速器中微子计划(Superbeam或Beta Beam)中发挥作用,因此与CERN的距离至关重要。在这篇文章中,焦点是源自CERN的$^{18}$ Ne和$^{6}$ He β束,并指向位于LAGUNA站点的50 kton液态氩探测器:Slanic(L=1570 km)和Pyhäsalmi(L=2300 km)。为了提高对中微子质量排序的灵敏度,这些基线与同时运行的相同通量相结合,该通量指向位于Canfranc(L=650 km)的大型Water Čerenkov探测器。这种简并打破组合所示,以提供可比的物理达到保守的魔术基线β梁的建议。对于提升到$γ=570$的$^{18}$ Ne离子和提升到$γ=350$的$^{6}$ He离子,当$\sin^{2}2θ_{13}>4\cdot 10^{-3}$处于该组合中时,可以在Slanic处确定所有$δ$的正确质量排序。

英文摘要:

Within the LAGUNA design study, seven candidate sites are being assessed for their feasibility to host a next-generation, very large neutrino observatory. Such a detector will be expected to feature within a future European accelerator neutrino programme (Superbeam or Beta Beam), and hence the distance from CERN is of critical importance. In this article, the focus is a $^{18}$Ne and $^{6}$He Beta Beam sourced at CERN and directed towards a 50 kton Liquid Argon detector located at the LAGUNA sites: Slanic (L=1570 km) and Pyhäsalmi (L=2300 km). To improve sensitivity to the neutrino mass ordering, these baselines are then combined with a concurrent run with the same flux directed towards a large Water Čerenkov detector located at Canfranc (L=650 km). This degeneracy breaking combination is shown to provide comparable physics reach to the conservative Magic Baseline Beta Beam proposals. For $^{18}$Ne ions boosted to $γ=570$ and $^{6}$He ions boosted to $γ=350$, the correct mass ordering can be determined at Slanic for all $δ$ when $\sin^{2}2θ_{13}>4\cdot 10^{-3}$ in this combination.

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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