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arXiv 0805.2019hep-phhep-ex
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一个带有非磁性探测器的低能中微子工厂

A low energy neutrino factory with non-magnetic detectors

Patrick Huber, Thomas Schwetz

摘要:

我们表明,非常精确的中微子/反中微子事件分离对于涵盖低能中微子工厂的物理计划来说并不是强制性的,因此可以使用水切伦科夫或液态氩探测器等非磁化探测器。我们指出,振荡本身强烈地增强了错误符号μ子搜索的信噪比,只要有足够精确的中微子能量重建。此外,我们认为,除了磁场,其他手段来区分中微子从反中微子事件(至少在统计上)可以探索。结合这一事实,即非磁性探测器可能会非常大,我们表明,适度的中微子/反中微子分离在50%至90%的水平是足够的,以获得良好的灵敏度CP破坏和中微子质量层次$\sin^22θ_{13}>10^{-3}$。这些非磁化探测器在中微子工厂的背景下有丰富的物理程序,包括超新星中微子和质子衰变等主题。因此,我们的观察打开了在中微子工厂束中使用多用途探测器的可能性。

英文摘要:

We show that a very precise neutrino/anti-neutrino event separation is not mandatory to cover the physics program of a low energy neutrino factory and thus non-magnetized detectors like water Cerenkov or liquid Argon detectors can be used. We point out, that oscillation itself strongly enhances the signal to noise ratio of a wrong sign muon search, provided there is sufficiently accurate neutrino energy reconstruction. Further, we argue that apart from a magnetic field, other means to distinguish neutrino from anti-neutrino events (at least statistically) can be explored. Combined with the fact that non-magnetic detectors potentially can be made very big, we show that modest neutrino/anti-neutrino separations at the level of 50% to 90% are sufficient to obtain good sensitivity to CP violation and the neutrino mass hierarchy for $\sin^22θ_{13}>10^{-3}$. These non-magnetized detectors have a rich physics program outside the context of a neutrino factory, including topics like supernova neutrinos and proton decay. Hence, our observation opens the possibility to use a multi-purpose detector also in a neutrino factory beam.

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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