论文标题
通过Dimuon最终状态增强搜索重QCD轴
Enhancing Searches for Heavy QCD Axions via Dimuon Final States
论文作者
论文摘要
QCD轴是QCD轴的良好动机扩展，同时仍解决了质量问题，同时仍解决了强大的CP问题。由于GLUON耦合，对于解决强CP问题至关重要，可以在轴转储和对撞机环境中为轴衰变常数与PEV一样大，这些轴可在大量的情况下产生，与PEV一样大，这与解决轴突质量问题有关。另外，如果这些轴具有松弛的耦合，它们可能会导致长寿命衰变，尤其是在大型轴轴模型中，尤其是在Dimuon阈值以上的Muons中，并且在GEV尺度以下。考虑到现有的限制，主要来自稀有的介子衰变，我们证明了当前和未来的中微子设施和长期颗粒搜索的潜力有可能通过Dimuon最终状态探测重质量QCD轴法参数空间的重要部分。
Heavy QCD axions are well-motivated extensions of the QCD axion that address the quality problem while still solving the strong CP problem. Owing to the gluon coupling, critical for solving the strong CP problem, these axions can be produced in significant numbers in beam dump and collider environments for axion decay constants as large as PeV, relevant for addressing the axion quality problem. In addition, if these axions have leptonic couplings, they can give rise to long-lived decay into lepton pairs, in particular, dominantly into muons above the dimuon threshold and below the GeV scale in a broad class of axion models. Considering existing constraints, primarily from rare meson decays, we demonstrate that current and future neutrino facilities and long-lived particle searches have the potential to probe significant parts of the heavy QCD axion parameter space via dimuon final states.
