论文标题
仅使用二阶耦合的70 GEV暗物质w imp的确切发现的潜力
Potential for definitive discovery of a 70 GeV dark matter WIMP with only second-order gauge couplings
论文作者
论文摘要
随着天文观测及其解释的改善,冷暗物质(CDM)的情况变得越来越有说服力。 CDM的特别吸引人的版本是一种弱相互作用的大粒子(WIMP),其质量在Electroweak量表附近,在早期宇宙中歼灭后自然可以具有观察到的遗物丰度。但是,为了使WIMP与当前严格的实验约束保持一致,它必须具有相对较小的间接,直接和对撞机检测的横截面。利用我们对这些横截面的计算和估计,我们讨论了发现最近提出的暗物质wIMP的潜力,该暗物质的质量约为70 GEV/c $^2 $,并且仅与W和Z bosons仅二阶耦合。有证据表明,可能已经实现了间接检测,因为Fermi-lat检测到的伽马射线和AMS-02观察到的抗磷脂的分析与具有我们计算出的$ \langleσ_{ann} v \ rangle \ rangle \ rangle \ rangle \ rangle \ f \ rangle \ y \ times 10^$ cm com com com come是一致的。估计对LZ和Xenonnt的敏感性表明,这些实验可能会在未来几年内实现直接检测,因为我们估计相关的横截面略高于$ 10^{ - 48} $ cm $^2 $。其他实验,例如Pandax,SuperCDM,尤其是Darwin,应该能够在更长的时间尺度上确认。高光度LHC可能会在大约15年内实现对撞机的检测,因为我们估计撞机横截面略低于1 femtobarn。确定的确认应来自更强大的计划对撞机实验(例如未来的圆形对撞机)。
As astronomical observations and their interpretation improve, the case for cold dark matter (CDM) becomes increasingly persuasive. A particularly appealing version of CDM is a weakly interacting massive particle (WIMP) with a mass near the electroweak scale, which can naturally have the observed relic abundance after annihilation in the early universe. But in order for a WIMP to be consistent with the currently stringent experimental constraints it must have relatively small cross-sections for indirect, direct, and collider detection. Using our calculations and estimates of these cross-sections, we discuss the potential for discovery of a recently proposed dark matter WIMP which has a mass of about 70 GeV/c$^2$ and only second-order couplings to W and Z bosons. There is evidence that indirect detection may already have been achieved, since analyses of the gamma rays detected by Fermi-LAT and the antiprotons observed by AMS-02 are consistent with 70 GeV dark matter having our calculated $\langle σ_{ann} v \rangle \approx 1.2 \times 10^{-26} $ cm$^3$/s. The estimated sensitivities for LZ and XENONnT indicate that these experiments may achieve direct detection within the next few years, since we estimate the relevant cross-section to be slightly above $10^{-48}$ cm$^2$. Other experiments such as PandaX, SuperCDMS, and especially DARWIN should be able to confirm on a longer time scale. The high-luminosity LHC might achieve collider detection within about 15 years, since we estimate a collider cross-section slightly below 1 femtobarn. Definitive confirmation should come from still more powerful planned collider experiments (such as a future circular collider) within 15-35 years.