Kim Doojin, Park Jong-Chul, Shin Seodong
Theory Department, CERN, CH-1211 Geneva 23, Switzerland.
Department of Physics, University of Florida, Gainesville, Florida 32611, USA.
Phys Rev Lett. 2017 Oct 20;119(16):161801. doi: 10.1103/PhysRevLett.119.161801. Epub 2017 Oct 18.
We propose a novel dark matter (DM) detection strategy for models with a nonminimal dark sector. The main ingredients in the underlying DM scenario are a boosted DM particle and a heavier dark sector state. The relativistic DM impinged on target material scatters off inelastically to the heavier state, which subsequently decays into DM along with lighter states including visible (standard model) particles. The expected signal event, therefore, accompanies a visible signature by the secondary cascade process associated with a recoiling of the target particle, differing from the typical neutrino signal not involving the secondary signature. We then discuss various kinematic features followed by DM detection prospects at large-volume neutrino detectors with a model framework where a dark gauge boson is the mediator between the standard model particles and DM.
我们为具有非最小暗区的模型提出了一种新颖的暗物质（DM）探测策略。潜在暗物质场景中的主要成分是一个增强的暗物质粒子和一个更重的暗区态。相对论性暗物质撞击目标物质后非弹性散射到更重的态，该态随后衰变成暗物质以及包括可见（标准模型）粒子在内的较轻态。因此，预期的信号事件伴随着与目标粒子反冲相关的次级级联过程产生的可见特征，这与不涉及次级特征的典型中微子信号不同。然后，我们在一个模型框架下讨论各种运动学特征以及在大体积中微子探测器上的暗物质探测前景，在该模型框架中，一个暗规范玻色子是标准模型粒子和暗物质之间的媒介。
