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arXiv 1206.0475hep-phhep-ex
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基于CERN的SuperBeam中微子振荡实验的物理研究

Physics reach of CERN-based SuperBeam neutrino oscillation experiments

Pilar Coloma, Enrique Fernandez-Martinez, Luis Labarga

摘要:

我们比较了欧洲超级束的两个代表性方案的物理潜力,研究了在1σ处可以实现的测量CP破坏相位(δ)的精度,以及质量等级和CP破坏发现潜力。第一种设置对应于从CERN瞄准位于Pyhäsalmi矿(2300 km)的100 kt液氩探测器的高能束,该矿是LAGUNA候选地点之一。第二个装置对应于一个低得多的能量束,从欧洲核子研究中心瞄准放置在Gran Sasso地下实验室(730公里)的500 kt水Čerenkov探测器。第二个备选方案还针对650公里的基线进行了研究,该基线对应于翁布里亚的LAGUNA候选场址和Canfranc地下实验室。所有结果也给出了统计量降低2、4、8和16倍的情况,以研究最近测量的大θ_{13}值所允许的通量、探测器质量或运行时间的可能减少。

英文摘要:

We compare the physics potential of two representative options for a SuperBeam in Europe, studying the achievable precision at 1σwith which the CP violation phase (δ) could be measured, as well as the mass hierarchy and CP violation discovery potentials. The first setup corresponds to a high energy beam aiming from CERN to a 100 kt liquid argon detector placed at the Pyhäsalmi mine (2300 km), one of the LAGUNA candidate sites. The second setup corresponds to a much lower energy beam, aiming from CERN to a 500 kt water Čerenkov detector placed at the Gran Sasso underground laboratory (730 km). This second option is also studied for a baseline of 650 km, corresponding to the LAGUNA candidate sites of Umbria and the Canfranc underground laboratory. All results are presented also for scenarios with statistics lowered by factors of 2, 4, 8 and 16 to study the possible reductions of flux, detector mass or running time allowed by the large value of θ_{13} recently measured.

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