来自具有MSSM的Starobinsky超引力的希格斯玻色子质量和热中性微子暗物质
Higgs boson mass and thermal wino dark matter from Starobinsky supergravity with the MSSM
AI总结：
该研究基于Starobinsky超引力与MSSM耦合提出框架，连接CMB与高能粒子现象学。通过暴胀尺度确定隐藏扇区质量尺度，进而确定MSSM软项等。得出与测量值相符的希格斯玻色子质量，还给出热中性微子暗物质候选者及相关特性，未来对撞机可验证。
AI中文摘要：
我们提出了一个将宇宙微波背景（CMB）可观测量与高能粒子现象学联系起来的框架，该框架基于与最小超对称标准模型（MSSM）耦合的Starobinsky超引力。宇宙暴胀和超对称（SUSY）破缺发生在Starobinsky超引力产生的隐藏扇区中。暴胀尺度确定了隐藏扇区的特征质量尺度，它通过SUSY破缺的引力介导来确定MSSM的软项。同一个隐藏扇区还可以动态产生一个高尺度的μ项。由此产生的MSSM谱确定了高尺度阈值修正和希格斯四次耦合重整化群（RG）演化的边界条件。希格斯四次耦合的三圈RG演化给出了在理论和实验不确定性范围内与测量值一致的希格斯玻色子质量，从而将原初标量扰动的幅度与希格斯玻色子质量联系起来。在R宇称守恒的情况下，最轻的超对称粒子是稳定的，使其成为一个有吸引力的暗物质候选者。观测到的遗迹丰度选择了一个物理质量约为3 TeV的近乎纯的热中性微子。其圈诱导的与核子的自旋无关散射截面低于LUX-ZEPLIN实验的当前灵敏度，但在下一代多吨液体氙探测器的预期探测范围内。电弱辐射修正会在带电和中性中性微子态之间产生一个小的质量分裂，导致带电中性微子寿命长且有特征性的消失径迹信号。未来的100 TeV质子对撞机可以发现来自3 TeV中性微子的消失径迹信号或完全排除这种热中性微子暗物质情景。
英文摘要：
We propose a framework connecting cosmic microwave background (CMB) observables with high-energy particle phenomenology, based on Starobinsky supergravity coupled to the Minimal Supersymmetric Standard Model (MSSM). Cosmic inflation and supersymmetry (SUSY) breaking occur within the hidden sector emerging from Starobinsky supergravity. The inflationary scale sets the hidden-sector mass scale and, via gravitational mediation of SUSY breaking, the MSSM soft terms. The same hidden sector can also dynamically generate a high-scale $μ$ term. The resulting MSSM spectrum fixes the high-scale threshold corrections and the boundary conditions for the renormalisation-group (RG) evolution of the Higgs quartic coupling. Three-loop RG evolution of the Higgs quartic coupling gives a Higgs boson mass consistent with the measured value within the theoretical and experimental uncertainties, thereby linking the amplitude of primordial scalar perturbations to the Higgs boson mass. With conserved R-parity, the lightest supersymmetric particle is stable, and the minimal framework developed here points to a nearly pure neutral wino as the dark-matter (DM) candidate. In the thermal-relic scenario, the observed abundance selects a wino mass of about $3$ TeV. Recent gamma-ray analyses exclude it as the sole DM component, even for conservative cored Galactic profiles. Alternatives include a subdominant wino fraction or late entropy dilution. Its loop-induced spin-independent wino-nucleon scattering cross section lies below current LUX-ZEPLIN sensitivity but within reach of next-generation liquid-xenon detectors. Electroweak corrections generate a small charged-neutral wino mass splitting, producing a long-lived charged wino and disappearing-track signature. A future $100$ TeV proton collider can discover the corresponding pure-wino signal or exclude the scenario independently of its cosmological abundance.
