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arXiv 2007.14411hep-phhep-ex
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MiniBooNE超量非振荡解的模型无关界

Model Independent Bounds on the Non-Oscillatory Explanations of the MiniBooNE Excess

Vedran Brdar, Oliver Fischer, Alexei Yu. Smirnov

摘要:

我们认为MiniBooNE检测到的事件的低能量过剩的非振荡的解释。我们提出了一个系统的搜索基于新的物理现象的情况下,可以产生过剩。我们将场景定义为一系列的过渡和过程,这些过程将目标中加速质子的相互作用与MiniBooNE探测器中的单簇射事件联系起来。这些方案的关键要素是新的轻$\mathcal{O}(\text{keV}-100\,\text{MeV})$粒子(费米子或/和玻色子)的产生和衰变。我们发现约$20$的情况下,尽可能少的新粒子和相互作用点。在实践中,他们都减少到几个通用的情况下,以这种方式,我们开发的MiniBooNE过量的有效理论。我们考虑在中微子实验T2 K ND 280,NO $ν$ A,MINER $ν$ A以及NOMAD和PS 191中使用近或近探测器的情况下的测试。这些场景立即将MiniBooNE过量和这些探测器中新物理事件的预期数量联系起来。我们计算的预期数量的事件作为新粒子的寿命和质量的函数,并面对他们与相应的实验界限。我们指出的情况下,被排除或强烈不赞成一个或几个实验。考虑到我们的一般方法,这项工作也可以被视为在基于加速器的中微子实验的新物理学的有效理论,与未来的项目,如DUNE相关。

英文摘要:

We consider the non-oscillatory explanations of the low energy excess of events detected by MiniBooNE. We present a systematic search for phenomenological scenarios based on new physics which can produce the excess. We define scenarios as series of transitions and processes which connect interactions of accelerated protons in target with single shower events in the MiniBooNE detector. The key elements of the scenarios are production and decay of new light $\mathcal{O}(\text{keV}-100\,\text{MeV})$ particles (fermions or/and bosons). We find about $20$ scenarios with minimal possible number of new particles and interaction points. In practice, they are all reduced to few generic scenarios and in this way we develop the effective theory of the MiniBooNE excess. We consider tests of the scenarios with near or close detectors in neutrino experiments T2K ND280, NO$ν$A, MINER$ν$A as well as in NOMAD and PS191. The scenarios immediately connect the MiniBooNE excess and expected numbers of new physics events in these detectors. We compute the expected numbers of events as functions of lifetimes and masses of new particles and confront them with the corresponding experimental bounds. We indicate scenarios that are excluded or strongly disfavored by one or several experiments. Given our general approach, this work can also be regarded as the effective theory of new physics at accelerator based neutrino experiments, being relevant for future projects such as DUNE.

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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