发表机构
Università di Salerno; INFN – Gruppo Collegato di Salerno; University of Zagreb（萨莱诺大学; 意大利国家核物理研究所萨莱诺协作组; 萨格勒布大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
受LUX-ZEPLIN高反冲候选事件启发，比较费米子与标量暗物质模型在太阳中的俘获与湮灭动力学，发现尽管总湮灭率相似，但中微子谱差异可作互补探测手段。
AI 中文摘要
受LUX-ZEPLIN高能核反冲候选事件启发，我们探讨太阳演化能否区分在主要氙反冲响应上简并的暗物质模型。我们比较了一个分裂的费米子电弱双重态与一个特定的惰性标量双重态，匹配它们的质量、激发能、相干跃迁相互作用以及主要弹性核响应。这种匹配确定了相同的直接探测信号和太阳中相同的光学薄首次俘获源，同时使俘获后的动力学依赖于模型。我们追踪了有限温度俘获、轨道演化、散射、激发态衰变、逃逸、热进入和湮灭过程。不同的激发态寿命产生不同的俘获历史，但对于指定的冷却相互作用，两个保留群体都热化并达到俘获-湮灭平衡，仅在后期湮灭率上产生适度差异。我们还推导了一个解析的受保护俘获判据，并针对共享的晕、太阳组成和核响应变化测试了该结果。尽管总湮灭率保持相似，但依赖于模型的规范玻色子分支比和极化在产生时产生不同的中微子谱。与已发表的IceCube模板进行的源级比较表明，标称的部分$WW$源超过了相应的纯$WW$模板限制，但并未构成探测器级排除或模型区分。因此，太阳演化提供了对匹配氙信号所隐藏的粒子模型差异的互补探测手段。
英文摘要
Motivated by the LUX-ZEPLIN high-energy nuclear-recoil candidate, we ask whether solar evolution can distinguish dark-matter models that are degenerate in their leading xenon recoil response. We compare a split fermionic electroweak doublet with a specified inert scalar doublet, matching their masses, excitation energy, coherent transition interaction, and leading elastic nuclear response. This matching fixes the same direct-detection signal and the same optically thin first-capture source in the Sun, while leaving post-capture dynamics model dependent. We follow finite-temperature capture, orbital evolution, scattering, excited-state decay, escape, thermal entry, and annihilation. The different excited-state lifetimes generate distinct capture histories, but, for the specified cooling interaction, both retained populations thermalize and reach capture--annihilation equilibrium, yielding only a modest difference in their late annihilation rates. We also derive an analytic protected-capture criterion and test the result against shared halo, solar-composition, and nuclear-response variations. Although the total annihilation rates remain similar, model-dependent gauge-boson branching fractions and polarizations produce distinct neutrino spectra at production. A source-level comparison with published IceCube templates shows that the nominal partial $WW$ sources exceed the corresponding pure-$WW$ template limits, without constituting a detector-level exclusion or model discrimination. Solar evolution therefore provides a complementary probe of particle-model differences hidden by a matched xenon signal.
Comments27 pages, 8 figures
