arXiv 1005.31462010-05-18hep-ph

EURONU WP6 2009年年度报告：Nufact、超束和β束的物理潜能更新

EURONU WP6 2009 yearly report: Update of the physics potential of Nufact, superbeams and betabeams

J. Bernabeu, M. Blennow, P. Coloma, A. Donini, C. Espinoza, E. Fernandez-Martinez, P. Hernandez, P. Huber, J. Kopp, A. Longhin, J. Lopez-Pavon, M. Mezzetto, T. … 展开作者

J. Bernabeu, M. Blennow, P. Coloma, A. Donini, C. Espinoza, E. Fernandez-Martinez, P. Hernandez, P. Huber, J. Kopp, A. Longhin, J. Lopez-Pavon, M. Mezzetto, T. Ota, T. Schwetz, W. Winter

备注：: 2009 Yearly report of the Working Package 6 (Physics) of the EUROnu FP7 EU project. 55 pages, 21 figures.

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摘要：

近十年来的许多研究表明，在更精确的中微子振荡实验中，我们可以测量未知角θ 13，发现轻子CP破坏，确定中微子的能级结构，在大气层中寻找次主导通道nue -> numu。在这份关于WP 6活动的第一份报告中，回顾了以下新结果：（1）重新评估下一代测量theta 13和delta的实验的物理范围;（2）根据需要在标准方案之外探索更大参数空间的新工具;（3）中微子工厂：（a）评估Nufact关于无菌中微子的物理范围;（b）评价Nufact在非标准相互作用方面的物理学范围;（c）评价Nufact在违反幺正性方面的物理学范围;（d）对Nufact的长基线τ探测进行严格评估;（e）在Nufact的近探测器上进行新的物理学研究;（4）β束：（a）伽马= 100的欧洲核子研究中心β束的离子选择和位置;（b）伽马= 100 β束设想方案的大气中微子本底重新评价;（c）双基线β束研究;（d）用β束测量中微子绝对质量;（e）单色β束的进展;（5）SPL超束物理势的更新。最后，我们提出了一个更新的比较的敏感性θ 13，三角洲和中微子质量层次的几个不同的建议设施。

英文摘要：

Many studies in the last ten years have shown that we can measure the unknown angle theta13, discover leptonic CP violation and determine the neutrino hierarchy in more precise neutrino oscillation experiments, searching for the subleading channel nue -> numu in the atmospheric range. In this first report of WP6 activities the following new results are reviewed: (1) Re-evaluation of the physics reach of the upcoming generation of experiments to measure theta13 and delta; (2) New tools to explore a larger parameter space as needed beyond the standard scenario; (3) Neutrino Factory: (a) evaluation of the physics reach of a Nufact regards sterile neutrinos; (b) evaluation of the physics reach of a Nufact as regards non-standard interactions; (c) evaluation of the physics reach of a Nufact as regards violation of unitarity; (d) critical assessment on long baseline tau-detection at Nufact; (e) new physics searches at a near detector in a Nufact; (4) Beta-beams: (a) choice of ions and location for a gamma = 100 CERN-based beta-beam; (b) re-evaluation of atmospheric neutrino background for the gamma = 100 beta-beam scenario; (c) study of a two baseline beta-beam; (d) measuring absolute neutrino mass with beta-beams; (e) progress on monochromatic beta-beams; (5) Update of the physics potential of the SPL super-beam. Eventually, we present an updated comparison of the sensitivity to theta13, delta and the neutrino mass hierarchy of several of the different proposed facilities.

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