A facility to search for hidden particles at the CERN SPS: the SHiP physics case
A facility to search for hidden particles at the CERN SPS: the SHiP physics case
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DOI：
10.1088/0034-4885/79/12/124201
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发表时间：
2015-04
影响因子：
18.1
通讯作者：
S. Alekhin;W. Altmannshofer;T. Asaka;B. Batell;Fedor Bezrukov;K. Bondarenko;A. Boyarsky;Kiwoon Choi-Kiwoon
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文献类型：
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作者：
S. Alekhin;W. Altmannshofer;T. Asaka;B. Batell;Fedor Bezrukov;K. Bondarenko;A. Boyarsky;Kiwoon Choi-Kiwoon
本文描述了欧洲核子研究中心SPS一个新的固定目标设施的物理案例。SHIP(搜索隐藏粒子)实验的目的是在费米标度以下质量非常弱的相互作用粒子的基本未被探索的领域寻找新的物理，这是LHC实验无法达到的，并研究tau中微子物理。同样的质子束装置稍后可以用来寻找轻子味道数非守恒的牛轻子的衰变，τ→3μ，以及寻找弱相互作用的亚GeV暗物质候选者。我们讨论了超越标准模型的物理证据，并描述了新粒子与四个不同门户-标量、矢量、费米子或类轴子粒子-之间的相互作用。我们讨论了不同模型的动机，通过这些交互作用表现出来，以及如何通过船舶实验来探索它们，并提供了几个案例研究。展望了在舰船上寻找相对较轻的超对称粒子和复合粒子的前景。我们证明了宇宙飞船实验具有发现新物理的独特潜力，并可以直接探索一些超越标准模型难题的解决方案，如中微子质量、宇宙的重子不对称、暗物质和暴胀。
This paper describes the physics case for a new fixed target facility at CERN SPS. The SHiP (search for hidden particles) experiment is intended to hunt for new physics in the largely unexplored domain of very weakly interacting particles with masses below the Fermi scale, inaccessible to the LHC experiments, and to study tau neutrino physics. The same proton beam setup can be used later to look for decays of tau-leptons with lepton flavour number non-conservation, τ→3μ and to search for weakly-interacting sub-GeV dark matter candidates. We discuss the evidence for physics beyond the standard model and describe interactions between new particles and four different portals—scalars, vectors, fermions or axion-like particles. We discuss motivations for different models, manifesting themselves via these interactions, and how they can be probed with the SHiP experiment and present several case studies. The prospects to search for relatively light SUSY and composite particles at SHiP are also discussed. We demonstrate that the SHiP experiment has a unique potential to discover new physics and can directly probe a number of solutions of beyond the standard model puzzles, such as neutrino masses, baryon asymmetry of the Universe, dark matter, and inflation.