论文标题
GAPS实验的宇宙抗抗细胞核-3核灵敏度
Cosmic antihelium-3 nuclei sensitivity of the GAPS experiment
论文作者
论文摘要
一般的反粒子光谱仪(GAPS)是一种南极气球实验,专为低能(0.1 $ - $ 0.3 GEV/$ n $)宇宙抗核心作为暗物质灭绝或衰减的签名。优化了间隙以检测低能量抗想望器,并对低能量抗脂子和核核提供了前所未有的敏感性。与以前的磁光谱仪实验相比,基于外来原子的形成,衰减和an灭的新型缝隙反粒子检测技术为这些低能抗核心提供了更大的识别能力。这项工作报告了基于完整的仪器模拟,事件重建和现实的大气影响模拟的差距检测抗二氢-3核的敏感性。 AMS-02对抗核候选事件的报告引起了对抗细核的极大兴趣,作为暗物质和其他标准模型理论之外的其他探针。间隙处于一个独特的位置,可以在宇宙抗核磁通量上检测或设置上限,而能量范围本质上没有天体物理背景。在三个35天的长期气球飞行中,差距将对$ 1.3^{+4.5} _ { - 1.2} \ cdot的抗生物通量敏感10^{ - 6} \ Mathrm {M^{ - 2} sr^{ - 1} s^{ - 1}}(\ Mathrm {Gev}/n)^{ - 1} $(95%置信度)在能量范围内0.11 $ - $ 0.3 gev/$ n $,打开新窗口的cosmic cosmicicsicics cosmicsicics。
The General Antiparticle Spectrometer (GAPS) is an Antarctic balloon experiment designed for low-energy (0.1$-$0.3 GeV/$n$) cosmic antinuclei as signatures of dark matter annihilation or decay. GAPS is optimized to detect low-energy antideuterons, as well as to provide unprecedented sensitivity to low-energy antiprotons and antihelium nuclei. The novel GAPS antiparticle detection technique, based on the formation, decay, and annihilation of exotic atoms, provides greater identification power for these low-energy antinuclei than previous magnetic spectrometer experiments. This work reports the sensitivity of GAPS to detect antihelium-3 nuclei, based on full instrument simulation, event reconstruction, and realistic atmospheric influence simulations. The report of antihelium nuclei candidate events by AMS-02 has generated considerable interest in antihelium nuclei as probes of dark matter and other beyond the Standard Model theories. GAPS is in a unique position to detect or set upper limits on the cosmic antihelium nuclei flux in an energy range that is essentially free of astrophysical background. In three 35-day long-duration balloon flights, GAPS will be sensitive to an antihelium flux on the level of $1.3^{+4.5}_{-1.2}\cdot 10^{-6}\mathrm{m^{-2}sr^{-1}s^{-1}}(\mathrm{GeV}/n)^{-1}$ (95% confidence level) in the energy range of 0.11$-$0.3 GeV/$n$, opening a new window on rare cosmic physics.