论文标题
船上对暗物质的敏感性
Sensitivity of the SHiP experiment to light dark matter
论文作者
论文摘要
暗物质是对现代天体物理学和宇宙学中许多观察结果支持的标准模型的完善理论补充。在这种情况下，弱相互作用的巨大颗粒的存在代表了对宇宙中观察到的热遗物的有吸引力的解决方案。实际上，正在进行大型实验运动，以检测亚GEV质量范围内的此类粒子。在深色光子的衰减中采用基准方案，以$α_d= 0.1 $和$ M_ {a'} =3M_χ$，我们研究了船舶实验的潜力，可以通过其散射和中性探测器（SND）检测到这种难以捉摸的颗粒的潜力。在5年的运行中，对应于CERN SPS的目标上的$ 2 \ CDOT 10^{20} $质子，我们发现船将改善深色物质从约1 MEV到300 MEV的质量范围的当前限制。特别是，我们表明船将在大多数质量窗口中探测Majorana候选者的热目标，甚至到达Pseudo-Dirac Thermal遗物。
Dark matter is a well-established theoretical addition to the Standard Model supported by many observations in modern astrophysics and cosmology. In this context, the existence of weakly interacting massive particles represents an appealing solution to the observed thermal relic in the Universe. Indeed, a large experimental campaign is ongoing for the detection of such particles in the sub-GeV mass range. Adopting the benchmark scenario for light dark matter particles produced in the decay of a dark photon, with $α_D=0.1$ and $m_{A'}=3m_χ$, we study the potential of the SHiP experiment to detect such elusive particles through its Scattering and Neutrino detector (SND). In its 5-years run, corresponding to $2\cdot 10^{20}$ protons on target from the CERN SPS, we find that SHiP will improve the current limits in the mass range for the dark matter from about 1 MeV to 300 MeV. In particular, we show that SHiP will probe the thermal target for Majorana candidates in most of this mass window and even reach the Pseudo-Dirac thermal relic.
